Malicious PDF — malware analysis report

Static analysis result for SHA-256 347f68a68b328893…

MALICIOUS

PDF

75.8 KB Created: 2021-06-10 01:41:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 0c82479031f0fd55d81dc403842d5051 SHA-1: 554fb41a0407d19f02626a6e27e2101fc4508d52 SHA-256: 347f68a68b3288930b6863f44f03bc7a4833e6f7588673705ea5ddacfa606c2c
126 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as 'Pdf.Phishing.Trojan' and a machine learning classifier indicated a high probability of maliciousness. It contains numerous embedded links, with one pointing to 'https://nomylo.ru/pbw?utm_term=saturn+in+scorpio+meaning', suggesting a phishing or scam attempt. The PDF also exhibits characteristics of a link farm on disposable hosting, further supporting a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://nomylo.ru/pbw?utm_term=saturn+in+scorpio+meaning PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4377125/normal_601c79cef1e6c.pdfIn PDF document text
    • https://webebusili.weebly.com/uploads/1/3/0/9/130969565/mubujikobeto_vuxilanozid_zoviwenefi_zowiduwi.pdfIn PDF document text
    • https://rerubugamujo.weebly.com/uploads/1/3/1/0/131070567/9321158.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368978/normal_602d5281580ec.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483591/normal_5ffdf4841439f.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4453734/normal_60b59e4a79a64.pdfIn PDF document text
    • https://gobibozuvabi.weebly.com/uploads/1/3/4/6/134683572/mebotulo_vaxenixive.pdfIn PDF document text
    • https://bovunago.weebly.com/uploads/1/3/4/4/134469774/boxivumij-xezil-xokufumubikevok.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420917/normal_6061a24a7f6f1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dawanitapix.pbworks.com/w/file/fetch/144872877/movimiento_rectilineo_uniforme_caracteristicas.pdfIn PDF document text
    • http://mosutit.pbworks.com/w/file/fetch/144980166/swang_mp3_download.pdfIn PDF document text
    • http://gediripu.pbworks.com/w/file/fetch/144947796/levadilufexubojomefupugos.pdfIn PDF document text
    • http://wusajigi.pbworks.com/f/barbie_mariposa_and_the_fairy_princess_full_movie_in_hindi_part_2_youtube.pdfIn PDF document text
    • http://sogotobev.pbworks.com/w/file/fetch/144930813/fopov.pdfIn PDF document text
    • http://gifavipa.pbworks.com/f/5195190905.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b3be1ba0-9752-44ef-b8db-0e488f45ff43/lg_v20_price_in_tanzania.pdfIn PDF document text
    • http://vajaxasave.pbworks.com/f/wodadoded.pdfIn PDF document text
    • http://wejojixi.pbworks.com/w/file/fetch/144424404/discussion_questions_for_who_moved_my_cheese.pdfIn PDF document text
    • http://jeselivid.pbworks.com/w/file/fetch/144490257/toxofapagudadipinobobu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f819ab06-79bf-4006-9ea2-d42edfcc0828/faxesereluk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/571e72b9-1c59-4790-bd68-cefbd7ca1ff6/can_actron_cp9580_be_updated.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ec4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC4C 5324 bytes
SHA-256: e61e460e29c1eb1f950ae435bc4bd0116ba0317c1ef64158d9f6cf96491cc053
font_01_sfnt_off0000fe55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE55 10588 bytes
SHA-256: 586b3277502fae0876cfeb66eaef362644709ce95792c76aa9f9a08a5b666451

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