Malicious PDF — malware analysis report

Static analysis result for SHA-256 2208ea3de1d0cfd1…

MALICIOUS

PDF

112.6 KB Created: 2021-03-26 07:36:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cee2642d19af79bbdeb30d28af8ed0bc SHA-1: 54c5f474d8b4994d31b3703885ada28b6451c13d SHA-256: 2208ea3de1d0cfd1d3c1be9bb696cf92d331088587c70a597b4be3a6e69f3eec
196 Risk Score

Malware Insights

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

The PDF contains heuristics indicating an advance-fee scam lure, specifically mentioning lottery/beneficiary language and parcel delivery requirements. It also contains numerous external links, suggesting a link farm or redirection mechanism. While no scripts were explicitly extracted, the presence of PDF_SEO_LINK_FARM and ML_NYX_PDF_MALICIOUS firings, along with ClamAV detection, strongly suggests malicious intent. The document body, though heavily obfuscated, contains keywords related to wealth and guides, aligning with the scam lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

Heuristics 6

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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://kuzutuzo.ru/wix?keyword=the+filthy+rich+guide+full+episodes
    • https://static.s123-cdn-static.com/uploads/4387571/normal_6000ad1b2f059.pdf
    • https://moredotaze.weebly.com/uploads/1/3/0/7/130776260/9dc3578eef85.pdf
    • https://static.s123-cdn-static.com/uploads/4379606/normal_5ff034daedefc.pdf
    • https://xazulifego.weebly.com/uploads/1/3/4/7/134727283/vasazoxir-zewavujoboguju-gijas.pdf
    • https://static.s123-cdn-static.com/uploads/4368782/normal_5fcd0466e797f.pdf
    • https://kuginipa.weebly.com/uploads/1/3/4/8/134853520/6221997b31.pdf
    • https://static.s123-cdn-static.com/uploads/4490949/normal_5fde5a20aefe9.pdf
    • https://static.s123-cdn-static.com/uploads/4485161/normal_5fef135863b4b.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/zumomasugipeno/bronto_platform_saddle_ideas.pdf
    • https://6cdf8c5e-36a0-4b6d-987f-32d3d50030cd.filesusr.com/ugd/3c2e2e_136997ae5ea44157a73935ff5bdfda1b.pdf?index=true
    • https://s3.amazonaws.com/tufitijinexu/39837234339.pdf
    • https://s3.amazonaws.com/nisoxow/livre_guide_du_routard_philippines.pdf
    • https://s3.amazonaws.com/pizivurapab/irs_form_additional_medicare_tax.pdf
    • https://35479656-6a94-44d6-ac55-da507c14a2ae.filesusr.com/ugd/d68318_63ea874d68b24c38bbee7425e0af9dab.pdf?index=true
    • https://ae8c1479-5121-4009-b0ed-8259dbb1205b.filesusr.com/ugd/0aff45_03d9a691f6a54c8790c1734a4b4dce16.pdf?index=true
    • https://s3.amazonaws.com/vinejivunitego/92107067231.pdf
    • https://91e55214-10ad-44cf-a10a-60a9392df58b.filesusr.com/ugd/e1c37d_c55855cd58a04c26b1586bd423fe302e.pdf?index=true
    • https://s3.amazonaws.com/lowuwofuxali/canon_inkjet_mx700_driver.pdf
    • https://s3.amazonaws.com/vatosolikijike/xagiwevexafugigebetu.pdf
    • https://s3.amazonaws.com/rabewiruzitewa/87235136762.pdf
    • https://78905da9-dd21-4190-abaa-c894c042e703.filesusr.com/ugd/851c7c_aff4e4409c974636b7a44c53b14f8223.pdf?index=true
    • https://2e5cbe44-7de3-4e3f-b94c-8a8567814465.filesusr.com/ugd/f96b02_eb87350bc8eb47f1a564940e172f8509.pdf?index=true
    • https://s3.amazonaws.com/sukedil/2010_jeep_wrangler_manual_transmission_removal.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00017be7.bin
c3fad38e576580cc12709fedb15251e4d26d2276bf55984adc931e4eab97de8a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x17BE7 5260 bytes
font_01_sfnt_off00018dd3.bin
4395af1d62a0c3acb3a9a290a1fa3890a3102a172c36bb16d1053adf9ed00d81		 pdf-font-stream PDF embedded font (sfnt) at offset 0x18DD3 11236 bytes

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