Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e97ca6229a132de…

MALICIOUS

PDF

94.6 KB Created: 2021-07-10 03:35:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: d7ba6924f1a4350196b9cd943035de9f SHA-1: bdec264a98c0d6772a1cd0b13f7af7bcf71e5023 SHA-256: 1e97ca6229a132dea7ba3eccd8b88a45bbd3f37c059c035d865e327cf4edba3e
156 Risk Score

Malware Insights

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

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains numerous links pointing to compromised websites, suggesting a link farm designed to redirect users to malicious content. The presence of multiple PDF link farm heuristics indicates a deliberate attempt to obscure the final destination and potentially distribute malware or conduct phishing attacks.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9820

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://www.homefacelifters.com/wp-content/plugins/super-forms/uploads/php/files/61d68b4a7898ebaec99ea428e98cc8c6/22687423569.pdf In PDF document text
    • https://jagamimpi.net/contents//files/xikibej.pdfIn PDF document text
    • https://www.spoton.pet/wp-content/plugins/super-forms/uploads/php/files/ataudik9iq35qup5cs6f26h06e/90348026195.pdfIn PDF document text
    • http://gennarimaq.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608b8450a3519---23333851084.pdfIn PDF document text
    • http://ahs1966.net/clients/f/f9/f93f52488d971b5f2372adc2bdb16541/File/96094229926.pdfIn PDF document text
    • https://elitstroycraft.ru/source/file/969065210.pdfIn PDF document text
    • https://www.hotel-palladium.gr/wp-content/plugins/super-forms/uploads/php/files/k368t667dd66frma59s9ofd5n0/49164141071.pdfIn PDF document text
    • http://hrzservices.com/uploadfiles/file/69805446632.pdfIn PDF document text
    • https://micast.de/wp-content/plugins/super-forms/uploads/php/files/4mgkj8u8a8pr7rapdqn4e1kntt/88485512434.pdfIn PDF document text
    • https://nyirfa.hu/uploads/files/xedutetimamaxesimu.pdfIn PDF document text
    • https://ensasoft.com.tr/wp-content/plugins/super-forms/uploads/php/files/dbmdumd88u6tanag0kk1l6k289/renutukeditaniga.pdfIn PDF document text
    • https://www.lamuccacompany.com/wp-content/plugins/super-forms/uploads/php/files/ac5fc304d6dd81e2f6ee1b52d5388f78/sajukaxadolekovurof.pdfIn PDF document text
    • http://ithaca1961.com/clients/875375/File/kerolunuwepizawak.pdfIn PDF document text
    • https://takipcisec.com/calisma2/files/uploads/65500248392.pdfIn PDF document text
    • https://www.alapan.org/fckimages/file/dijim.pdfIn PDF document text
    • https://readxyz.com/wp-content/plugins/super-forms/uploads/php/files/3f5e011596b5fe072ec6303cc76f85a2/52230550074.pdfIn PDF document text
    • http://suachuadienlanhhoaphat.com/hinhanh_fckeditor/file/53251973089.pdfIn PDF document text
    • http://pck.malopolska.pl/wp-content/plugins/super-forms/uploads/php/files/f1e074d3012885a4906c6da27bd38455/57855916930.pdfIn PDF document text
    • https://www.ayersworthglen.com/wp-content/plugins/formcraft/file-upload/server/content/files/16090a98cc046d---dixelosokoge.pdfIn PDF document text
    • https://vizzzio.ru/wp-content/plugins/super-forms/uploads/php/files/ce023ba293534779a430c923c63a09ef/tudewutelo.pdfIn PDF document text
    • https://benqmusicworkshop.com/fupload/file/13897329252.pdfIn PDF document text
    • http://www.majorisinvestimentos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a76956dd214---51318046059.pdfIn PDF document text
    • http://chiangmaicharmingtravel.com/ckfinder/userfiles/files/xinadagujama.pdfIn PDF document text
    • http://abwpetersburg.com/uploads/files/difex.pdfIn PDF document text
    • https://hoavily.com/uploads/files/67219140261.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BvfzZFkJO3s/uplcv?utm_term=c+interview+questions+and+answers+for+freshers+pdf+downloadPDF link annotation
    • http://s292376414.onlinehome.fr/datas/imgmail/file/gujawadebimifozirifelaka.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010d53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D53 17360 bytes
SHA-256: 4ba67f54d7b44d3c38663d1a00a4ad88844175d83144b878aff6191fa5c6d07c
font_01_sfnt_off00013acc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13ACC 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000152e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x152E3 11024 bytes
SHA-256: b7f5e0fce451a12835062cf402f69a5334a98933d56df11e88d51a32eb38e991