Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a0078b1e6c88a9c…

MALICIOUS

PDF

78.1 KB Created: 2021-04-06 19:19:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: d2f16bbb93d347090e4a845290076a57 SHA-1: 93485504489dd7c6f5299f204ad6b65ec34166a7 SHA-256: 6a0078b1e6c88a9cda7b8b3e2caac331262f41a2ee0667746a793876712e2ca2
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://fokemale.ru/wix?keyword=dragoon+rotation+ff14+5.2 PDF link annotation
    • https://risovokoxenixe.weebly.com/uploads/1/3/3/9/133997247/6922387.pdfIn PDF document text
    • http://memiwuv.mygamesonline.org/77995999307.pdfIn PDF document text
    • http://borejukeluteva.mygamesonline.org/vifexunab.pdfIn PDF document text
    • https://nivujetomut.weebly.com/uploads/1/3/4/7/134753784/c86a4b2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386354/normal_603088dc414c7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456399/normal_60610c62c0ab3.pdfIn PDF document text
    • https://faloxumotib.weebly.com/uploads/1/3/4/6/134646793/xixakodawulunam.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484995/normal_601ac494041ed.pdfIn PDF document text
    • https://saniluje.weebly.com/uploads/1/3/4/3/134323688/997185.pdfIn PDF document text
    • https://jixivegeparimes.weebly.com/uploads/1/3/4/7/134749144/jajekaba-fidawakawaxer.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413346/normal_60375eef1878a.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/tenunud/xuxewet.pdfIn PDF document text
    • https://s3.amazonaws.com/garorowa/ariane_5_user_s_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/11cc648e-2d44-4e38-a9bb-b44fa8be5404/honda_eu3000is_generator_for_sale_in_canada.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ef96094b-5e6d-42f0-b183-8a0e20b82ebe/flowers_in_the_attic_movie_2014_full_movie.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d6c5489c-d7c4-4308-84df-d9d265c59082/wesedafikilit.pdfIn PDF document text
    • http://tijuvewoduga.onlinewebshop.net/analog_computer_techniques.pdfIn PDF document text
    • https://s3.amazonaws.com/redegelesibif/37988281887.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5f1eee54-60f1-46a1-b5b6-4c7cdc3bab36/lamesanelenisanasebave.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_off0000e81d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE81D 4824 bytes
SHA-256: 450351700f23a7076cf88ef98a76aa8d54226a12589ab7e0509c5e0e59fcb581
font_01_sfnt_off0000f89e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF89E 10684 bytes
SHA-256: d418bbc118c6791826313b9a6b9a88d957376879fc29d6cbf847791824b28283
font_02_sfnt_off00011d2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D2C 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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