Malicious PDF — malware analysis report

Static analysis result for SHA-256 027dd1711369a306…

MALICIOUS

PDF

83.9 KB Created: 2021-03-26 19:29:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: b0a3344624d5022c3cf3b77f3a77879e SHA-1: 3e2c40cb0c2160ec6564f4c6492eac3c002b94ee SHA-256: 027dd1711369a306a7941125e96635f5256e6cd509323a14c568557a6d112fa3
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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 https://pelibifir.ru/123?utm_term=usb+burning+tool PDF link annotation
    • http://famekeletiti.iblogger.org/89768150291.pdfIn PDF document text
    • http://sagunutu.medianewsonline.com/semazixonujarapuma.pdfIn PDF document text
    • https://cdn.sqhk.co/zepipawetopi/lieiigg/cute_halloween_costumes_for_couples_2020.pdfIn PDF document text
    • http://xemizawufogutuf.scienceontheweb.net/24479216320.pdfIn PDF document text
    • http://xiruzox.mygamesonline.org/food_safety_temperature_chart_uk.pdfIn PDF document text
    • http://raxejudesezix.scienceontheweb.net/telewo.pdfIn PDF document text
    • https://cdn.sqhk.co/retesixabe/xhiuehf/cool_kora_apk_telecharger.pdfIn PDF document text
    • https://cdn.sqhk.co/satukevaguka/PIhiXif/48563739916.pdfIn PDF document text
    • https://cdn.sqhk.co/jepivitixiwo/gcgirEf/79976133707.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tuzuxutetug.atwebpages.com/kerajaan_bani_abbasiyah.pdfIn PDF document text
    • https://40052bae-d6b0-4be3-9c84-96956a804c69.filesusr.com/ugd/32907c_ff106c0b5f9a47b4a6a596ccbd4b216a.pdf?index=trueIn PDF document text
    • https://33fe1336-4051-433c-b691-b763732126dd.filesusr.com/ugd/6c8f37_03e6d54e7191418287060a4f7093a306.pdf?index=trueIn PDF document text
    • http://kugavozi.rf.gd/read_aristotle_and_dante_online.pdfIn PDF document text
    • http://pojoviraxerojo.myartsonline.com/lawovagalokemizanur.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a7d0fd7b-bc44-4870-904d-1c2c973d9797/kabc-ii_nu_subtest_descriptions.pdfIn PDF document text
    • https://3c31dc6e-14a3-4e60-a373-897e90814001.filesusr.com/ugd/9e17d8_317c108f29bf486eb0c865036bd10c2c.pdf?index=trueIn PDF document text
    • http://kagilabitivibe.epizy.com/noluduba.pdfIn PDF document text
    • http://duxepivol.myartsonline.com/vefunore.pdfIn PDF document text
    • https://43a2ba88-5de9-465b-b95f-6a4d82f2d06e.filesusr.com/ugd/dcbeda_83fc4cac9fe040cc95703759779e7303.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/ede2e7cf-bec3-4a36-9a8b-cff6f19d2b24/mepafavej.pdfIn PDF document text
    • http://besipobewawite.rf.gd/sebaxono.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e5005539-cbe9-4b2d-b6f6-39349913bf76/computer_parts_store_near_me_now.pdfIn PDF document text
    • http://tajuvajewebu.epizy.com/data_analysis_techniques_for_high_energy_physics.pdfIn PDF document text
    • 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://scripts.sil.org/OFLIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010e3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E3F 4772 bytes
SHA-256: d8ac63d0df081662d3490ce490624f76e5b4437756be36eb99a0cf269ade9f8a
font_01_sfnt_off00011e8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E8D 10568 bytes
SHA-256: a85b977a06f5b66f1a9ede089aa8952c4ee8fa2ddb2acde5906a61f4d31f6978

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