Malicious PDF — malware analysis report

Static analysis result for SHA-256 009e47b606f1385d…

MALICIOUS

PDF

83.8 KB Created: 2021-03-18 04:45:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 8f18bf3e38add1de11ceefb99e4c3477 SHA-1: 7e247e96fe970c4438e63d1c0e58faa744358ef1 SHA-256: 009e47b606f1385d9e20d58f546ab588297185844ec0fc706416be5a92373e5d
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains a large number of external links, suggesting it functions as a link farm. One of the primary external URIs points to a URL that appears to be part of a search engine optimization (SEO) scheme, potentially to drive traffic or host further malicious content. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://vilenefex.ru/wb?keyword=tl-wpa4220%20alternative%20firmware PDF link annotation
    • https://pulakaxumif.weebly.com/uploads/1/3/0/7/130776647/kofexagul.pdfIn PDF document text
    • https://ruvavaru.weebly.com/uploads/1/3/0/8/130874457/6ff06f8abc9c0.pdfIn PDF document text
    • https://gagavupotiwek.weebly.com/uploads/1/3/0/8/130813998/mumepamerujozuxenaje.pdfIn PDF document text
    • https://zazanopub.weebly.com/uploads/1/3/2/7/132712119/5cd7e9764868.pdfIn PDF document text
    • https://dexanefuv.weebly.com/uploads/1/3/1/3/131383512/6bacd3fe89f477.pdfIn PDF document text
    • https://xoverepidagagit.weebly.com/uploads/1/3/4/4/134469055/5b71b8790e88ef3.pdfIn PDF document text
    • https://musisemikalig.weebly.com/uploads/1/3/4/6/134694348/8185533.pdfIn PDF document text
    • http://tijipavafetudo.22web.org/the_witcher_3_prima_official_game_guide.pdfIn PDF document text
    • https://sivesasa.weebly.com/uploads/1/3/4/6/134669324/mejir.pdfIn PDF document text
    • https://babobulelemin.weebly.com/uploads/1/3/5/3/135344535/nalupitupiduk_vazetejuzos_xapubopuza.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
    • http://xatonidimo.rf.gd/shark_cordless_pet_perfect_ii_hand_vac_sv780_review.pdfIn PDF document text
    • https://f07eb630-23ff-4298-a1df-d7940f1ba2dc.filesusr.com/ugd/097a5b_d07674c25f7d470ea7022f3d5a55beb3.pdf?index=trueIn PDF document text
    • http://kezatafoxab.epizy.com/scripture_the_prayers_of_the_righteous_availeth_much_kjv.pdfIn PDF document text
    • http://pomewegipezu.rf.gd/cellulose_microfibrils.pdfIn PDF document text
    • https://a581e706-3bf6-41fb-8978-ad4d4077590d.filesusr.com/ugd/afbe6b_662289ed42b5470b920245031354493c.pdf?index=trueIn PDF document text
    • https://ce2645ba-e89a-43d5-afff-5c0150757291.filesusr.com/ugd/c63dba_d78c28c78c574a6dad83cd66a320f8c9.pdf?index=trueIn PDF document text
    • http://fotenataxiw.rf.gd/65552732300.pdfIn PDF document text
    • https://5984e891-aecd-43e6-866f-efdb297c9c35.filesusr.com/ugd/403565_155ebfb20285424ca9d724cd74a1e33d.pdf?index=trueIn PDF document text
    • http://tisikifapov.rf.gd/83922491455.pdfIn PDF document text
    • http://xavogob.epizy.com/access_database_manual.pdfIn PDF document text
    • http://rogadeza.epizy.com/90851909615.pdfIn PDF document text
    • http://mibavened.rf.gd/affairs_cloud_current_affairs_june_2020.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

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f2f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2F0 5040 bytes
SHA-256: 31741c6b2d50f9bc114ab49b83bd12f248465844257fef05b6275032c8cb23a0
font_01_sfnt_off00010403.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10403 1796 bytes
SHA-256: c9c850e9c351ce199d5e9d1c42a783cd39d33267a74ccb43d8a2fed304f07254
font_02_sfnt_off00010c8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C8E 10724 bytes
SHA-256: d1f15788eb8cf3f3dcc67e931c9048713cb6de4e27c834e296082fc4c7840893
font_03_sfnt_off00013137.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13137 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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