Malicious PDF — malware analysis report

Static analysis result for SHA-256 85be621b54c6efe6…

MALICIOUS

PDF

34.2 KB Created: 2020-08-04 18:20:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d7526802738f540e962514350951f652 SHA-1: 221da84c993747d7c2863ab86fb05be27ff21c73 SHA-256: 85be621b54c6efe642c08a7ce6d313bc9b65db45d6006f05fcfdd0ffccc33a58
194 Risk Score

Malware Insights

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

This PDF document contains a large number of external links, many of which point to a redirector infrastructure. The primary redirector URL is https://ttraff.cc/pify?keyword=artemaster+libro+pdf, which is flagged as malicious. The document body also contains this URL and other Shopify links, suggesting a phishing or scam attempt to drive traffic to malicious sites. No scripts were extracted, but the heuristic firings strongly indicate a malicious link farm and redirector strategy.

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.cc/pify?keyword=artemaster+libro+pdf In PDF document text
    • http://files.kelownaplumbingsolutions.com/uploads/1/3/1/3/131381078/fawubi.pdfIn PDF document text
    • http://files.lindezaclothing.com/uploads/1/3/2/7/132740377/vusigujozus.pdfIn PDF document text
    • http://files.iammeexclusives.com/uploads/1/3/1/1/131163914/bidabije.pdfIn PDF document text
    • http://files.invernesswhiskytours.com/uploads/1/3/1/1/131164393/faaaf391884b803.pdfIn PDF document text
    • http://files.alamegjewelry.com/uploads/1/3/1/3/131379085/1623079.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/1/0433/0458/3318/files/joduzonexikose.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2400/5794/files/wobigonetululus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0427/1524/files/15032019667.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9954/4984/files/volove.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0047/1456/files/80195187225.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4542/0188/files/filumexutu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2729/9478/files/tekuserafixud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2236/0469/files/nevegeragenivupisixi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0674/6011/files/gta_vice_city_torrent.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mirizopenifipometetotagoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5476/8021/files/challenges_facing_african_countries_after_independence.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004ac4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4AC4 5316 bytes
SHA-256: ab26651c66272c72dc9cdbd15b08c0b6e675a276d62ad140517dd56f8bd028c4
font_01_sfnt_off00005cb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CB1 9156 bytes
SHA-256: 2d674439da0b622ed7bccde23bfdb5f2709294fd9b9d5689e507c2ce0f7ab2ff

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