Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f9a60a568337bd0…

MALICIOUS

PDF

41.6 KB Created: 2020-10-03 17:51:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: a4d9ff696888604a957e53388cd2e6bf SHA-1: 7eef1a67098a93e174c184db75f905422f0e388b SHA-256: 2f9a60a568337bd0025c67eaa91b8a0e206f2305e43605b6e4cced24bb0c3a56
234 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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/strik?keyword=querido+diario+otario+cole%25C3%25A7%25C3%25A3o+completa In PDF document text
    • http://files.littlecharliesbakeshop.com/uploads/1/3/0/8/130814935/6067749.pdfIn PDF document text
    • http://bujup.jimdonica.com/uploads/1/3/1/4/131482833/tewozisuposelekotisu.pdfIn PDF document text
    • http://files.teachingartiststudio.com/uploads/1/3/0/8/130873830/8194219.pdfIn PDF document text
    • http://losuxim.ymirsrest.com/uploads/1/3/1/3/131383483/b9027b3d52.pdfIn PDF document text
    • http://liloka.coopersvilledda.com/uploads/1/3/1/6/131636698/3354112.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/6f40db60-46e0-4cb9-96ad-10ba63d1f863/wuniwaki.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e72b77c1-8fbf-4d04-8abe-d7187ae5ef56/10239043418.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f8a58958-4075-4dc5-ba7a-276c7878db6a/50185800324.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b2db9b12-f65e-4240-b38a-5f16fceac26b/76698800197.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c168538-f37a-4e14-8551-fa0501f8cbd5/91566838072.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fd8e1626-deca-437a-80da-8f7bdda3b54b/9818076881.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/991595eb-cb8e-49b4-af9c-822861822474/14555580196.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b190a99c-c043-4239-a063-71171fdc2cce/68625834171.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/44e1f688-5382-44be-ba29-d8e7412a7d03/35595558500.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0d6bd304-1ccd-44ca-9cf9-38eb6e3fd006/desamemomivibenusu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7584624d-649a-4b33-9a73-8836c26a374b/87396732403.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

Related samples 2

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005f22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F22 5600 bytes
SHA-256: 536435da43f2025f06521414b42e93d3acaed94184194edff6ffc3e16aa035d6
font_01_sfnt_off0000713e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x713E 12224 bytes
SHA-256: 8035cafaa13faa1ee66f90e36bdbe018ac3bdaaff9891d727402bfab513e399f

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