Malicious PDF — malware analysis report

Static analysis result for SHA-256 6bf4182fdca34969…

MALICIOUS

PDF

41.2 KB Created: 2020-08-22 15:56:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 63f757f7b896974d963358d8dc3168ae SHA-1: 7aea87f5cce830b4c29e088b590d587fdbd0b71a SHA-256: 6bf4182fdca34969951b8c71716c506fdada1f3001d6e13502c31fa035fc38b8
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links, with a critical heuristic firing indicating they lead to known malicious redirector infrastructure. The document body and heuristics suggest a lure related to 'mobile app like website template', likely a phishing pretext. The presence of numerous external PDF links, some pointing to benign Shopify URLs and others to unknown hosts, indicates a link farm designed to obscure the malicious redirector.

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.com/pify?keyword=mobile+app+like+website+template In PDF document text
    • http://webelut.therapistsmap.com/uploads/1/3/0/7/130739430/3744739.pdfIn PDF document text
    • http://files.lailascase.com/uploads/1/3/1/8/131871614/0ac37255038042.pdfIn PDF document text
    • http://files.cccaabbrefs.com/uploads/1/3/0/7/130740256/8886256.pdfIn PDF document text
    • http://files.broadwaterdragons.com/uploads/1/3/1/4/131453253/2503781.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/1/0448/0499/7271/files/fight_cave_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4647/5678/files/filebaxebafe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1117/7639/files/44222257764.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3858/6518/files/how_to_restart_php_on_mac.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5453/8658/files/30857830168.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7980/2782/files/gidozup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3199/4280/files/88197984021.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1909/2647/files/jejurazidatuzumerujipeju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9476/8802/files/52802579738.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8421/8532/files/fatelabin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/1058/8578/files/2947723738.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4052/9816/files/8667117244.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 8

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_off000061b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61B8 5172 bytes
SHA-256: afd6edff99b8952c4459d07398f3af13376dc939636641fc9d1d4acccd7ccccf
font_01_sfnt_off00007351.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7351 10264 bytes
SHA-256: c4122c9277d7fb816c7d4dd8ed5bab6943f0243049cb744b42e601836c58a701

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