Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b0e6fcaf13a85c8…

MALICIOUS

PDF

50.1 KB Created: 2020-10-07 23:09:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: f150d49969d9486c32f40718ab200b29 SHA-1: b13c6066ee8eca0a7dd07195b90f4e522d0159af SHA-256: 0b0e6fcaf13a85c8b7d2a585313f7fc410c1710a0b9a39f2bf2bf8446a0e5d8f
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which point to external PDF files hosted on various platforms. One of these links, 'https://ttraff.com/pify?keyword=pot+of+greed+banned+reddit', is identified as a malicious redirector. This suggests an attempt to lure users to malicious infrastructure, likely for further exploitation or phishing. The ML classifier also strongly indicated maliciousness.

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://ttraff.com/pify?keyword=pot+of+greed+banned+reddit In 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://cdn.shopify.com/s/files/1/0432/7938/4731/files/pidavebikafifizunukore.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3768/5920/files/ziwibizuxap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9970/7810/files/60183200481.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f1edb989-f868-485f-8eff-6a2cd0117a1c/pisukuvajoxupixuto.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9588f6f9-fc86-4786-949b-27298b96eb98/dijonawe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fcb39789-d12e-4224-abcf-c124e0a58de9/nurimi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/184d2e86-bffb-40af-986f-9b7c33277947/5613557057.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5cfabf03-9ce3-42aa-91f2-b14002a4a63c/zapasonupagopofovufe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a16a980d-2fc7-4169-b03c-8710c6b2fb92/37190801869.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/60fe9eb5-1995-4f25-a69c-b57313f55956/maruxib.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/55468911-11c2-4d0a-a56b-acb1094e7806/37923433254.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/429813d9-8a5f-4620-9efa-960754ffd3bb/22056289717.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6c994f39-fcd5-4afd-8b8c-3a8dbdb0a2ff/7320567525.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/268723c9-4fec-476e-a47a-de6e8e190795/zabakisafejefuk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9a66b4c3-8e5b-4365-8faf-32fdb70a8e3a/55111077891.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_off000078cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78CD 4796 bytes
SHA-256: 2b1267fde3e1f012d10020773c64f30790b5de2767903e10dae56ec2f3bb81b9
font_01_sfnt_off00008922.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8922 10712 bytes
SHA-256: e3bbc7d9f385ae041c4fb3fc43efee3d467767d7d1cfbf5496ef414bea182a6b
font_02_sfnt_off0000adbb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xADBB 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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