Malicious PDF — malware analysis report

Static analysis result for SHA-256 840f787b0a1e8e85…

MALICIOUS

PDF

39.9 KB Created: 2020-08-19 19:30:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d74629c205396de02b07997a96a271df SHA-1: cf42c26cc1e656c15c7eeb6bc15c89f2613bfd7d SHA-256: 840f787b0a1e8e856610d3842da902c9afd3e69233ef1c3bdec2a94014d5d8b3
194 Risk Score

Malware Insights

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

The PDF contains a lure related to a 'Christmas party invitation template' and embeds numerous links, many of which point to a redirector service known for malicious activity. The primary malicious URL identified is https://ttraff.ru/pify?keyword=christmas+party+invitation+template, which is flagged as a malicious redirector. The document body also contains obfuscated text and embedded URLs, suggesting an attempt to disguise malicious content and redirect users to potentially harmful sites.

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=christmas+party+invitation+template In PDF document text
    • http://files.pumpjet.com/uploads/1/3/1/4/131406807/fa98c1fe3b29.pdfIn PDF document text
    • http://files.mystardustobservatory.com/uploads/1/3/2/6/132681698/c44caaac72fe.pdfIn PDF document text
    • http://files.abbykingphotography.com/uploads/1/3/2/6/132695489/merute-lizivimo-resaludokuzados-kafedaxoj.pdfIn PDF document text
    • http://files.paufranch.com/uploads/1/3/0/7/130740183/puwejijuledi.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/1/0431/1256/2849/files/bajrangbali_god_full_hd_wallpaper.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jomanumono.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6062/5562/files/royal_commission_report_effect_on_property_market.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3136/1686/files/hosts_file_location.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0664/7717/files/70854364076.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0659/0106/files/xobujakixovofoxodepines.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6428/5601/files/definicion_de_contaminacion_ambiental_segun_autores.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9964/4314/files/k_project_kissanime.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1049/0519/files/wonerilokewepesala.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3387/8940/files/95486445900.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 3

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_off00006028.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6028 5128 bytes
SHA-256: 7a8802bc545e714e7d32afe23ba02a032d878f790f89dde31ecc4c4ba5856140
font_01_sfnt_off0000717a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x717A 9728 bytes
SHA-256: f31ce141e99e098baed6c94497a461d431e8dd6f79063d0f0a897a0186d33e4f

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