Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a1fa367a0a03e4c…

MALICIOUS

PDF

45.1 KB Created: 2020-10-30 06:05:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 8017ec6888b726108cad47e66448efd3 SHA-1: dc0f84582df5c496e7f4f91888cee80738faa293 SHA-256: 1a1fa367a0a03e4c56cbfe8ab859e5949124ef5306a0542ca8dcc96f38f82b08
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with one identified as a known malicious redirector. The ML classifier also strongly indicated maliciousness. The document body, though partially corrupted, contains the URL https://gettraff.ru/aws?keyword=barry+university+fire+academy+address, which is flagged as malicious. This suggests the document's primary purpose is to direct users to malicious infrastructure.

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://gettraff.ru/aws?keyword=barry+university+fire+academy+address In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366406/normal_5f8729d53e562.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366407/normal_5f875d10a86ff.pdfIn PDF document text
    • https://jorimedazaget.weebly.com/uploads/1/3/0/7/130738946/pomemegifaxe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368218/normal_5f8b6f7734864.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402297/normal_5f9ae51bb7756.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371536/normal_5f88b1188a5b3.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/b81ce9cf-b1f6-43d4-a110-b273b2cf8ff1/38857876976.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5552/9640/files/livros_de_psicologia_comportamento_humano.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/991b26b5-64c9-4cde-b493-6d85ae2a864d/micro_center_return_policy_laptops.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/02517191-bfcd-48c4-acbe-365fa158b76e/26142041964.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/05bc4025-6e78-475f-96ab-4309d49cd5e3/40261407724.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ce22cdf9-0c40-449e-a7f4-389d67ad21ee/duturukewetunef.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6255e677-003e-487d-973d-60be1fe20d18/musepazokunenunirigomo.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_off00007087.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7087 5344 bytes
SHA-256: f1331c91fd0c62cf9fa33882d5e1ec9eac8c247e5295af68bd8792ae20b14877
font_01_sfnt_off000082b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82B3 10692 bytes
SHA-256: 455cd8ae3122bb5fca6f79f20f269ca604b2b818821a589adb4355a5059e657d

Open this report in the interactive analyzer, or submit your own file for analysis.