Malicious PDF — malware analysis report

Static analysis result for SHA-256 29996b6cd0dfaf56…

MALICIOUS

PDF

41.9 KB Created: 2020-11-05 23:24:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 8dae9d579bd8e67f312549738a370c26 SHA-1: 2c57a75e8b2005dcff6fad2bc3c87ac0af661345 SHA-256: 29996b6cd0dfaf565e5d1281133192e96cbb05dfb4ab4652870d6055cc2c2af7
136 Risk Score

Malware Insights

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

The PDF contains heuristics indicating it's a lure for free downloads and a phone scam, with numerous phone numbers stuffed into the document body. The primary URL, https://traffnew.ru/123?keyword=ffa+fruit+sales+ohio+form, is associated with SEO redirectors and is likely used to deliver a malicious payload or lead to a phishing site. No scripts were extracted, but the overall structure and content point to a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • Travel-support phone-number stuffing scam critical SE_TRAVEL_SUPPORT_PHONE_SCAM
    Document repeats phone numbers in airline/travel/refund/support language, often across multiple regional phrasings. This matches SEO/support-scam PDFs that impersonate airlines or travel brands and route users to attacker-controlled call centers rather than a normal travel document.
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://traffnew.ru/123?keyword=ffa+fruit+sales+ohio+form PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4387421/normal_5f8fc6d15b9a8.pdfIn PDF document text
    • https://jiwadurator.weebly.com/uploads/1/3/0/7/130776405/460490.pdfIn PDF document text
    • https://dofikusoru.weebly.com/uploads/1/3/4/4/134472045/lupefum_zusujivojowuv_kiwojikipa_bawuf.pdfIn PDF document text
    • https://laxigozi.weebly.com/uploads/1/3/4/3/134361341/6f2869e2f.pdfIn PDF document text
    • https://pavowojavujide.weebly.com/uploads/1/3/1/3/131398322/pofumemame.pdfIn PDF document text
    • https://lalusaguru.weebly.com/uploads/1/3/4/6/134611329/1055289.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384835/normal_5f8e4ed3a6242.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418777/normal_5f97dba1cae41.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366654/normal_5f87b8558ff97.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00006407.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00006407.bin)
    • https://s3.amazonaws.com/gowebabuxogiro/kadatopizekimanujam.pdfIn PDF document text
    • https://s3.amazonaws.com/sodoxi/ribefupif.pdfIn PDF document text
    • https://s3.amazonaws.com/kudufigunabi/93007895357.pdfIn PDF document text
    • https://s3.amazonaws.com/mamibis/st_nicholas_square_village_2019_brochure.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 extracted file (font_00_sfnt_off00006407.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006407.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6407 4960 bytes
SHA-256: 1a29a0614fd7fc88c43818425ef6c20451b927a792d569f1bfd81c6cfd8108bd
font_01_sfnt_off000074bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74BD 11268 bytes
SHA-256: 834ac4bb0782ed67d114ebe63bdc3b6f8edeea780c6c67a11a757b9f6f9192af