Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a1c972ce6515c59…

MALICIOUS

PDF

65.6 KB Created: 2020-10-10 12:13:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 8a7b52391e4aa50fb57021c2e922dfcb SHA-1: 5265630d43b2f0323cc0b8847a0aae28f0c3f416 SHA-256: 9a1c972ce6515c590cf0e8072be6e41a09207f13272065e86ded1671f68cf254
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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/pify?keyword=non+corporeal+cia In PDF document text
    • https://site-1045390.mozfiles.com/files/1045390/80704121239.pdfIn PDF document text
    • https://site-1042591.mozfiles.com/files/1042591/85205690682.pdfIn PDF document text
    • https://site-1039806.mozfiles.com/files/1039806/nipamazujupa.pdfIn PDF document text
    • https://site-1037129.mozfiles.com/files/1037129/96568205296.pdfIn PDF document text
    • http://files.reflexinstitute.ca/uploads/1/3/1/3/131379594/d16d8774c1.pdfIn PDF document text
    • http://files.extractivism.net/uploads/1/3/0/8/130873849/gelidigupofivuv.pdfIn PDF document text
    • http://files.constanzohistory.com/uploads/1/3/0/7/130740521/5594178.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://cdn.shopify.com/s/files/1/0429/0756/6239/files/takirejakuzuxokuzuripe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/0013/0468/files/69361456494.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/7937/1414/files/modatanugopivadepilito.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2448/0416/files/51242882937.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/6719/8628/files/addons_maker_for_minecraft_windows_10.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/728c226b-6f2d-4934-8f3f-89258547e1db/nofajatunakamibexinesiko.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ff4aa591-5872-40b4-a941-0211501d3cd9/90494864852.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a29a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA29A 4428 bytes
SHA-256: a75a76c81c83406d07739032a75e9ef0c21952d21e9e57ca403fd6a02e418a8c
font_01_sfnt_off0000b193.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB193 10696 bytes
SHA-256: f45d9c1bc80421cf781d04ebb816a6651dce5c4b8f11ec69d86c2b6a8f9893fa
font_02_sfnt_off0000d679.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD679 16100 bytes
SHA-256: f12bcc42cb143e9cc41a08ef9f9c81c8a36c017982c073a20263204097028d61
font_03_sfnt_off0000eb3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB3B 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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