Malicious PDF — malware analysis report

Static analysis result for SHA-256 71d8a5f06d9977f7…

MALICIOUS

PDF

36.0 KB Created: 2020-08-02 15:58:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3af7a570864f6e70d2fc6f4698a1fadd SHA-1: 3441bc405cd2d29f12ebae85257a4c4ad55e3b51 SHA-256: 71d8a5f06d9977f7c00857123f3a955a1705291bd0889141c8ea64c683e12063
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to a redirector URL (https://ttraff.ru/pify?keyword=dd+national+live) identified as malicious. The document body, though heavily obfuscated, also contains this redirector URL. The presence of a large number of external PDF links suggests an attempt to create a link farm or distribute content through a compromised site, with the primary malicious URL acting as a lure. No scripts were extracted from this sample.

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://ttraff.ru/pify?keyword=dd+national+live In PDF document text
    • http://files.summasportswear.com/uploads/1/3/1/4/131453807/118d8e22a22790b.pdfIn PDF document text
    • http://files.integritymgmt.net/uploads/1/3/0/8/130873728/junokiwab_kebufetapi_foxisajenukigi.pdfIn PDF document text
    • http://files.beauteaspace.com/uploads/1/3/2/8/132814071/9421232.pdfIn PDF document text
    • http://files.drgurski.com/uploads/1/3/1/1/131164321/fewowolotiperavedux.pdfIn PDF document text
    • http://files.jessicafineartist.com/uploads/1/3/1/3/131384335/linoz.pdfIn PDF document text
    • http://www.zengatv.com/embedIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8547/0627/files/43454557745.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8153/9488/files/cummins_onan_generator_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1892/7776/files/14417785620.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5622/5688/files/fuxasuwizux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4288/2215/files/83277464452.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6780/8667/files/vasipoxapame.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2936/4889/files/90903894886.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8150/7740/files/reset_git_repo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8116/9051/files/after_effects_wiggle.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5656/9249/files/pemulalu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0094/6073/files/biliwidozobu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4373/3154/files/acurite_5_in_1_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0093/9164/files/mutamejinigasoramufinileb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4292/0869/files/fufuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vawis.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_off00004ff5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4FF5 4604 bytes
SHA-256: 55dc282f6da0238abf8b81464b48b693d470d321d59e0526a6f6ace567698ffc
font_01_sfnt_off00005fbc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FBC 10180 bytes
SHA-256: b6fb6c643d4590714e83ffd2f6eff10559141b11acd218fd29eddb3654835dcf