Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f704ddd8690e9d6…

MALICIOUS

PDF

40.9 KB Created: 2020-08-25 16:26:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 81e3e33838f62f8d3897db9c1fa5cec9 SHA-1: 33d2ca9c039c0bd17a956f2d239e6ed93b118418 SHA-256: 4f704ddd8690e9d64c6332dc900530ef2b9fa97578b63d00d794953e2755b23a
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.ru/pify?keyword=blackberry+bold+9900+os+7.+1'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, including one to 'https://cdn.shopify.com/s/files/1/0432/1692/8923/files/zasifavodezuxibaluvugufis.pdf'. The document body, though heavily obfuscated, contains text fragments that, combined with the heuristic, suggest a lure for payment or invoice-related scams.

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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=blackberry+bold+9900+os+7.+1 In PDF document text
    • http://files.fredswansonbooks.com/uploads/1/3/2/8/132815123/3852127.pdfIn PDF document text
    • http://sokebetu.wholereflections.com/uploads/1/3/1/6/131636725/fuxemujisudosidij.pdfIn PDF document text
    • http://rupap.palladinohomeinspection.com/uploads/1/3/1/4/131406717/3ce555912cccb.pdfIn 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/1/0432/1692/8923/files/zasifavodezuxibaluvugufis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7211/9199/files/45084927698.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1848/4888/files/jujipujusi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1596/9688/files/63807200242.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0485/4426/files/43986648409.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6781/0726/files/concepto_alelopatia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2265/4362/files/gymshark_nz_size_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8148/2919/files/82796155572.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7056/3239/files/suvowobalijol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6338/6016/files/tepubexizimojuwal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7318/2625/files/asfixia_mecanica_por_ahorcamiento.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/9502/6840/files/anthropometric_data_for_interior_design.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3222/2615/files/avivamento_na_rua_azusa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1928/0288/files/gininowinotalojinofig.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
🗂 Part of campaign: fredswansonbooks.com 6 samples

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005f4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F4C 5752 bytes
SHA-256: e6a0ff4a8db0a09dd4147c6e40a13ccafebf633151979c3987dea8276f4c7cb0
font_01_sfnt_off000072f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72F9 10456 bytes
SHA-256: 41a710eeb4544afb820940fa878a4059d7f6f605b4c1331a52ffd1d4189b944d