Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a9e4c2b9fcd7f27…

MALICIOUS

PDF

45.0 KB Created: 2020-10-17 01:08:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 9b8c18f800c5725ecdf4f4f7ac91ace1 SHA-1: e5d2b9c20b6703e3ec4283daa9d6db660ee43b4d SHA-256: 3a9e4c2b9fcd7f277f28e11a72392dabeb97a8cc37e0d1e1204c9676db8ecd1a
154 Risk Score

Malware Insights

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

This PDF document contains a large number of embedded links, many of which point to external PDF files hosted on various platforms. One prominent link, 'https://ggtraff.ru/123?keyword=gold%2527s+gym+390r+owners+manual', is identified as a malicious redirector. The document's structure and the presence of numerous links suggest an attempt to manipulate search engine rankings or direct users to malicious content, likely as part of a phishing or scam campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://ggtraff.ru/123?keyword=gold%2527s+gym+390r+owners+manual In PDF document text
    • https://mojivimimujovo.weebly.com/uploads/1/3/0/8/130874437/44d87feaf8ee.pdfIn PDF document text
    • https://noxepelobisuse.weebly.com/uploads/1/3/1/8/131871648/b3485477cfe1.pdfIn PDF document text
    • https://pepuzategazeg.weebly.com/uploads/1/3/1/4/131453576/92392f8b.pdfIn PDF document text
    • https://zeginuvo.weebly.com/uploads/1/3/0/7/130775519/fawukako-ludujudaf-nalizoxuzawu-xumip.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376379/normal_5f89dacef2871.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368788/normal_5f88235611fcb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372072/normal_5f8a191c0b5c0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377408/normal_5f8a156a6bba5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375521/normal_5f8a1525546dd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367911/normal_5f883773776db.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366055/normal_5f872d34a444b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/c3e317c6-617d-4c23-a097-7a56c354c133/11339064311.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0818136a-f1f6-4782-8e25-520a6fc25678/69303416820.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b12ef2ee-c265-43cb-b04e-af0fc2ef7ad5/72005410265.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6618edbe-aa0d-4e68-af5f-cf98ec82516f/sozugevigaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/7248/3228/files/nukuvokiwuxonexoxox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8092/4840/files/full_auto_bb_gun_mod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/9120/0674/files/befejevoturawewanojutute.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/3516/7400/files/3584771652.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/3328/7592/files/segeredoxakomeguri.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_off00006f51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F51 5864 bytes
SHA-256: 8cf85d2b6a36359ebd1e4868cda1cc48da1a556c42f684e5221fe539cbfb7915
font_01_sfnt_off0000834d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x834D 10548 bytes
SHA-256: 26e58cd129089505dcfb8cb19604cdce064cb718a858031fe6408e5a9a0ac056

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