Malicious PDF — malware analysis report

Static analysis result for SHA-256 227794e8ebc79c27…

MALICIOUS

PDF

83.8 KB Created: 2021-03-11 02:06:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: f5502be2a01eb06d19005d54aaafcdfb SHA-1: ff4cde6cc3381af894984f6e05a0e82380254066 SHA-256: 227794e8ebc79c270f85d20892cb382f2f49ed1b5a22ed17735f62aaf24825d9
156 Risk Score

Malware Insights

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

The PDF file contains heuristics indicating it is a phishing or malicious document, including a large number of external links and ML classification flagging it as malicious. The embedded content, though obfuscated, suggests a lure related to 'Remington lawn mower bag' and points to the URL https://maypoin.ru/wix. The presence of PDF_SEO_LINK_FARM suggests an attempt to generate traffic or distribute further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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 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.
  • 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://maypoin.ru/wix?keyword=remington+lawn+mower+bag PDF link annotation
    • http://nezowigivomi.scienceontheweb.net/yamaha_dgx_cost.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378628/normal_601f6ac00b540.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4503035/normal_600482a68c459.pdfIn PDF document text
    • http://gibelepij.scienceontheweb.net/dosunabopab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451221/normal_6032084ced9a3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407552/normal_6014a3a4f355a.pdfIn PDF document text
    • http://korixoludofuguk.scienceontheweb.net/tobarafafowerijisip.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450728/normal_600f6fabe41a3.pdfIn PDF document text
    • http://bewewafip.scienceontheweb.net/how_to_do_business_without_money.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://s3.amazonaws.com/salosibejodod/android_app_to_add_text_to.pdfIn PDF document text
    • https://a44a9d9e-3ce9-422e-9b5d-83ef2d4925cb.filesusr.com/ugd/3234e9_5ec977771c994450a863c086f8a73350.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/ganubatebedoxez/workitect_competency_development_guide.pdfIn PDF document text
    • https://d99d9bf7-a5e0-49f2-90ac-0d1bc881463d.filesusr.com/ugd/0182ef_ee3aae5301e34b88a14a675b13d6ad1b.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/pafexegud/3867344379.pdfIn PDF document text
    • https://s3.amazonaws.com/pesetufavo/2020_jeep_wrangler_2_door_order_guide.pdfIn PDF document text
    • https://c01188fd-d8af-4b86-846b-090f7ecd58d8.filesusr.com/ugd/9058e5_8e3d34f4b8714a10b94a86cf13b9e94f.pdf?index=trueIn PDF document text
    • https://3a00e800-a8eb-44ae-aafc-ae9aecab8e06.filesusr.com/ugd/1715bf_b3ae0dd886bf45c6a504a44f5b407885.pdf?index=trueIn PDF document text
    • http://pogetowem.onlinewebshop.net/kamejovewekifabepa.pdfIn PDF document text
    • https://5e54824a-8208-41b0-8aeb-7c017e8cfb46.filesusr.com/ugd/f64db8_b6d7d093831d4404a3ea6bb03d3b7338.pdf?index=trueIn PDF document text
    • https://29159626-56e2-4eb2-a8c1-eb081f451e44.filesusr.com/ugd/a58502_70e9910d0c7c4ecdbd92cc7adbde986b.pdf?index=trueIn PDF document text
    • https://19972ee8-34f0-4900-8009-9f590161cd02.filesusr.com/ugd/64db51_69b11e049d144f428c97fd5978bc24e8.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/pipaneku/68456257486.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ff95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF95 4852 bytes
SHA-256: 915d6473e27f627fec6af2d4810d09a4ff5a66ece6510b1ef93cfddc3d789706
font_01_sfnt_off00011007.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11007 10308 bytes
SHA-256: 4571a76abd599884ab2d7dbb56912e4af4def70d76ebba642c216fd021c123d0
font_02_sfnt_off0001334f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1334F 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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