Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7db4d26cb02fcf3…

MALICIOUS

PDF

90.4 KB Created: 2021-03-08 22:38:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-13
MD5: fbbed4957e60950358d0a66d63d9e017 SHA-1: 9b8292b1c19b71b46e63716a767429d74c92114b SHA-256: e7db4d26cb02fcf3e6f3afac36b5404d75cda1d4dc87ef5a5896ef74644feef5
166 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating it is a link farm designed to redirect users to malicious content, specifically identified as a payment redirection lure. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were directly extracted, the PDF structure and embedded URLs point towards a phishing or scam attempt, likely involving a second-stage download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise 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://golowaki.ru/wix?keyword=babylock+emp6+service+manual PDF link annotation
    • http://winnerslm.space/96814128185j6vgx.pdfIn PDF document text
    • http://xupulakikovuxo.mypressonline.com/9845192266.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461219/normal_5fe6f13f7129a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387586/normal_5ff07019b6b58.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383915/normal_60185ccfdc441.pdfIn PDF document text
    • http://tomandbxof.site/how_do_you_add_like_terms_with_exponentsvr7lp.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366989/normal_5fe8810bc473f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471512/normal_5fed7a3f2aa68.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454545/normal_600b7c19a00a2.pdfIn PDF document text
    • http://apsmall.space/bluffton_weather_reportgpc8n.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467278/normal_5fe9d52bc3ade.pdfIn PDF document text
    • http://jovasetiveduza.scienceontheweb.net/62702460808.pdfIn PDF document text
    • http://grusha.space/average_cost_of_kitchen_remodel_in_floridaq63rn.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486751/normal_5feb5bfc3a0e4.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/nawosineromigi/61888403266.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/158cad33-70ac-4309-8d0d-7bc7e394f068/13665974500.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/496768b5-ebd1-46d6-87ff-c2293f5260d9/mn_dmv_drivers_test_appointment.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5f25e1bd-64ba-475c-9de6-638f4eed41cd/70358978180.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c6cfb7f-1647-4585-b9b5-64eb5bda574b/how_to_adjust_tables_in_google_docs.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c2b0006f-7c93-4f9a-acb0-b285479817ed/element_tv_has_power_but_will_not_turn_on.pdfIn PDF document text
    • http://gajutar.onlinewebshop.net/navy_seals_vs_zombies_movie_review.pdfIn PDF document text
    • https://s3.amazonaws.com/bojafazes/coreldraw_2018_crack_free_utorrent.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_off0001168e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1168E 5452 bytes
SHA-256: d6510abb673b33e6d3b37022a1a9394a9bbb2767bf7a822d964637ae4cd27332
font_01_sfnt_off000128f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x128F7 10988 bytes
SHA-256: b9cce664693cab38f06de8fdeb1377978d6da0331999cc7a6df857c24f76f2e9
font_02_sfnt_off00014e44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14E44 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71