Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e358859a7388a8f…

MALICIOUS

PDF

114.5 KB Created: 2021-07-21 08:41:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 38fe0ebb9fd3d3a4f967497e333494f6 SHA-1: 7a61ae37c00e8866ce3ca3e13a2bff9dbd140bea SHA-256: 0e358859a7388a8f9da12060a31ba9a4f199b853b9303adbbf0c722edc93a567
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF was flagged by a machine learning classifier and ClamAV as malicious, indicating it likely exploits a vulnerability or contains malicious content. The presence of numerous links pointing to compromised WordPress sites and other disposable hosting suggests a phishing or malware distribution campaign. The document body is unreadable, but the heuristics indicate a link farm designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://paintingservicesonline.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1609d83856a84f---tiwurefoke.pdf In PDF document text
    • http://jaika.in/images/documents/files/85111164323.pdfIn PDF document text
    • http://wawabed.pl/uploads/userfiles/file/runarajenagef.pdfIn PDF document text
    • https://www.nstoplana.rs/ckfinder/userfiles/files/kinabapumatubeve.pdfIn PDF document text
    • https://certifiedmoversinc.com/wp-content/plugins/super-forms/uploads/php/files/302bdec85716efea957c2cfaeeaedf71/60844093476.pdfIn PDF document text
    • http://jrpst.pl/userfiles/file/poduxabilup.pdfIn PDF document text
    • https://www.zulilighting.com/wp-content/plugins/super-forms/uploads/php/files/3a18fa55f8be530b9091f13b1cd88652/nelotenepil.pdfIn PDF document text
    • https://egyptsuntours.com/userfiles/files/42678381947.pdfIn PDF document text
    • http://www.integra-cr.cz/administrace/ckfinder/userfiles/files/sevekedadopepekusose.pdfIn PDF document text
    • http://asu.com.vn/wp-content/plugins/super-forms/uploads/php/files/g93dvutghc8rntkc5tehno6njp/41565959454.pdfIn PDF document text
    • http://ural-resyrs.ru/data/file/mojepotarusemigizoponiwe.pdfIn PDF document text
    • http://www.ddd-iasi.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1608d1ee769bc2---54911532468.pdfIn PDF document text
    • https://skyfireconsulting.com/wp-content/plugins/super-forms/uploads/php/files/bj2j8828ou65adtvvg2t6ncmjl/73238051614.pdfIn PDF document text
    • http://www.belladermeestetica.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609585fca0cca---85915703634.pdfIn PDF document text
    • https://www.caesarstravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a266ca467b5---5699421419.pdfIn PDF document text
    • http://goodslib.com/userfiles/files/35981756507.pdfIn PDF document text
    • http://sip7.online/wp-content/plugins/super-forms/uploads/php/files/eb6f34ed237db506bca2f6dadf920fe3/ruduloxopajatosomeloga.pdfIn PDF document text
    • http://xn--12cmi2byac9cdhd0hra6d7bxkwbgj1gch.com/user_img/files/86792503045.pdfIn PDF document text
    • http://www.elsecretodelolivo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a2000f8db3c---nusovimeniniwid.pdfIn PDF document text
    • https://skyfireconsulting.com/wp-content/plugins/super-forms/uploads/php/files/l1o0bt8kk7cnck66unshgac1hv/73151238315.pdfIn PDF document text
    • http://bracyfamilyreunion.com/clients/c/c2/c2db1a97f769835965582c74015c7782/File/zorofaje.pdfIn PDF document text
    • https://travelworld.ro/userfiles/file/62915348263.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/Om9ozkHLxGw/uplcv?utm_term=toast+and+almond+butterPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00014a07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14A07 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00016218.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16218 16092 bytes
SHA-256: 9d5144547e0b729630886a3ad3ce48e7da84b0115899dd9c2390406af6f0fecd
font_02_sfnt_off00017759.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17759 17372 bytes
SHA-256: ee45ef41436ac9c44a5887958e0cc83380760b44e5d4b7d766ac26abb89da8c4
font_03_sfnt_off0001a4bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A4BD 10520 bytes
SHA-256: 480c6c6394d9fa489879945714f475fe9ea3e85aaeab12f7f7dd883fc886d95d

Open this report in the interactive analyzer, or submit your own file for analysis.