Malicious PDF — malware analysis report

Static analysis result for SHA-256 b73201264498929c…

MALICIOUS

PDF

45.0 KB Created: 2020-08-16 13:33:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 256995ff3bcb1d9faec212bc4639e8fc SHA-1: 2b85e43c95e233d39a77ac9ae681bcf948b07bab SHA-256: b73201264498929c487a79a8faba35caba7275af9afffd9c23573eb854ed5131
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Addends T1059.001 PowerShell

The PDF file exhibits characteristics of a malicious redirector link farm, as indicated by the critical heuristic firing. It contains numerous embedded URLs, with a primary one pointing to `https://ttraff.ru/pify?keyword=videoshow+video+editor+pro+app`, which is flagged as malicious. The document body, though heavily obfuscated, also contains this URL, suggesting an attempt to lure users to potentially harmful content. The ML classifier strongly supports the malicious verdict.

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=videoshow+video+editor+pro+app In PDF document text
    • http://gaden.allaynewebster.com/uploads/1/3/1/4/131438096/totejib-vozaxiwobesu-winaseke-dunifazubixibuj.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/1/0428/5058/2684/files/42355665187.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4430/5061/files/kokafaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8827/2807/files/cfp_study_material.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9328/5277/files/kodamidogabakikurovajelud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7505/1424/files/zisur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/46552055365.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2051/5488/files/8942305579.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8198/0321/files/55403149267.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9019/0248/files/15278936157.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8239/0431/files/pofujanodisurewos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0214/9540/files/ap_eamcet_seat_allotment_2020.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 1

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006388.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6388 4812 bytes
SHA-256: ea3392d134a09ae0471cc5acce76ed9abe090afa4abd99c89ca8d30d8e228cf6
font_01_sfnt_off0000740b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x740B 10904 bytes
SHA-256: 4cbe8f50d5becb2c398e9c6986a47d45e57553cfc07dca6d3739c324917871fa
font_02_sfnt_off00009936.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9936 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

Open this report in the interactive analyzer, or submit your own file for analysis.