Malicious PDF — malware analysis report

Static analysis result for SHA-256 72da5cf1151eb1c9…

MALICIOUS

PDF

44.9 KB Created: 2020-08-23 22:27:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 47bae069f4d3d67cd58a4c836a1d294a SHA-1: e2c66a2a32e7b049fa22a0c1c76106c8a44fa003 SHA-256: 72da5cf1151eb1c9db5a65d048cee32cad967c995da8c8d04ad73f06fd3b0a97
194 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many pointing to Shopify domains hosting other PDFs, suggesting an SEO link farm. One critical heuristic identified a link to a known malicious redirector infrastructure at 'https://ttraff.ru/pify?keyword=berberine+and+metformin+together'. The document body, though heavily obfuscated, contains this same URL, indicating a likely phishing or scam lure disguised as a free download. No scripts were extracted, but the PDF structure and link farm indicate malicious intent.

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=berberine+and+metformin+together In PDF document text
    • http://vifujopu.thai-elaws.com/uploads/1/3/0/9/130968988/4ab65e16e640a7.pdfIn PDF document text
    • http://teduga.b-dogdesign.nl/uploads/1/3/1/4/131406535/6897724.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/1/0435/2661/9287/files/piwikedixa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0537/0787/files/8642957162.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8938/5888/files/saxophone_repair_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4899/2919/files/25093347490.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0576/2974/files/33148576152.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3514/0007/files/17711477468.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4453/6473/files/semutud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5272/8474/files/15353943577.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5992/7448/files/25114019414.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3167/4535/files/aakasamantha_movie_songs_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7441/2949/files/guxitosojamotolute.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 4

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_off000071b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71B9 5300 bytes
SHA-256: 80022ff498f58a9aaa43fa85132cb89cc8dc64c75f5b9c49fc61b7030c5df010
font_01_sfnt_off00008393.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8393 10220 bytes
SHA-256: 0a7e437553b74b83a5fcaae5f73f647d81a58f074eeefc16e0a8657430468957

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