Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1d4d4d5ab94b7e3…

MALICIOUS

PDF

80.1 KB Created: 2021-03-19 06:13:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 3b272203cec0b48272927880a2a6a603 SHA-1: ef82f50e12b415dc0567a63293715de61e6eb8ed SHA-256: d1d4d4d5ab94b7e34259654dcde9d23b1d83924cb7371818d6ff475751829c7d
126 Risk Score

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 0.9991

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://xezojetit.ru/wix?keyword=because+of+winn+dixie+answers+to+questions PDF link annotation
    • https://ferizovewop.weebly.com/uploads/1/3/4/8/134887996/zuwimo_jetegu_gumojoja_gomibo.pdfIn PDF document text
    • http://trujillostacoshop.com/lego_harry_potter_collection_ps4_trophy_guideg0ejo.pdfIn PDF document text
    • http://tronreserve.online/bogus4np0p.pdfIn PDF document text
    • http://hotsgirls.online/smash_bros_brawlo3lxz.pdfIn PDF document text
    • https://kekugijofer.weebly.com/uploads/1/3/5/3/135321092/3623814.pdfIn PDF document text
    • http://fibubileb.22web.org/64769208403.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://8cff94d3-ecab-4ea5-ad27-d3e67d02fd32.filesusr.com/ugd/2813e2_f6e690324fc641efaa7aa7f054848d87.pdf?index=trueIn PDF document text
    • http://lojosuxotugades.epizy.com/89631895589.pdfIn PDF document text
    • http://pigibotokaper.epizy.com/63861562319.pdfIn PDF document text
    • http://molodetagako.epizy.com/abg_interpretation_quiz_with_answers.pdfIn PDF document text
    • http://nagivozuzosawax.rf.gd/create_side_menu_android.pdfIn PDF document text
    • https://s3.amazonaws.com/xefejevife/android_on_alcatel_idol_4s_windows.pdfIn PDF document text
    • http://pozadel.epizy.com/mepuwimarepuligafasepo.pdfIn PDF document text
    • https://7162f0c1-3bb2-4775-9ad2-1e34613fb889.filesusr.com/ugd/595093_6f0a63b0ce0040c183e7673f4bed972d.pdf?index=trueIn PDF document text
    • https://c6926203-1eb9-401e-9afa-11f61f201807.filesusr.com/ugd/685707_cb11f1c633df42f98f9599fb31ea6282.pdf?index=trueIn PDF document text
    • http://lejetuw.rf.gd/xewinivarakel.pdfIn PDF document text
    • https://e209d09f-5af8-48a0-acfc-72d03e9bea0d.filesusr.com/ugd/946fcc_64b50297239c4750a4e7d7c5db85dbc7.pdf?index=trueIn PDF document text
    • http://tepoduzurajik.epizy.com/4268553874.pdfIn PDF document text
    • https://s3.amazonaws.com/xukirizugukugi/nuwep.pdfIn PDF document text
    • https://5c90cfa9-af55-48e2-9430-1f3580382729.filesusr.com/ugd/e2b09b_8d75027f0d4b4299a8504816c52574cb.pdf?index=trueIn PDF document text
    • http://vukilef.rf.gd/wopidevebatiwojibogosix.pdfIn PDF document text
    • http://rulenanevatetid.epizy.com/mendelian_genetics_practice_problems.pdfIn PDF document text
    • https://s3.amazonaws.com/mipizaju/85459797800.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ed64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED64 5200 bytes
SHA-256: 77b6ec4dd8109254c7764c05dfaad495e5a03f8b3750cade076927f54f05a123
font_01_sfnt_off0000ff28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF28 10916 bytes
SHA-256: ed8c219008e031d0b9fc3d1dfe920461c2e6427fea4dccc45d24e3889052d42a
font_02_sfnt_off0001244f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1244F 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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