Malicious PDF — malware analysis report

Static analysis result for SHA-256 72dc6cf1fe53b740…

MALICIOUS

PDF

45.9 KB Created: 2020-08-01 19:21:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f41d7654324931e44c5e4cb9cf68aa98 SHA-1: 208528d2e36ed5678869f66491c59af1c1e4f927 SHA-256: 72dc6cf1fe53b74088ae33129fb5a031a19a5c8105f73b8621c0bd9347eab225
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains embedded links that redirect to a malicious SEO redirector, identified as 'ttraff.ru'. The document body, though heavily obfuscated, contains text related to 'LG universal remote codes', suggesting a lure to trick users into clicking the malicious link. The presence of numerous external PDF links further indicates a link farm strategy, likely for SEO manipulation to distribute malicious content.

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=lg+universal+remote+codes In PDF document text
    • http://files.nursingconcepts.org/uploads/1/3/1/4/131452883/c4982f9424aa.pdfIn PDF document text
    • http://files.doggiestylezinc.com/uploads/1/3/1/3/131384663/6210112.pdfIn PDF document text
    • http://files.centrallyesl.com/uploads/1/3/2/8/132815866/8376184.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/1/0433/0687/7080/files/jazaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4815/7859/files/hp_dv9000_parts_diagram_keyboard.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4012/9692/files/puwujirefofazugitexu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9975/8497/files/34939746718.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3273/9989/files/47385284198.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9906/2426/files/bakezuwurutixaluk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3427/9062/files/vodizonutunijefuboraferiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9338/3585/files/58210972413.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7732/1379/files/enderman_farm_overworld.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6137/9226/files/fitenorozixivilisefugujav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3173/2122/files/65181294750.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_off00007544.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7544 5260 bytes
SHA-256: 3c53a30c391d46e34a756717685390ac71ae78e53b725d49ad1fee23f29dba10
font_01_sfnt_off00008720.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8720 10616 bytes
SHA-256: 4cc0d13f06bf97b0f27cb52af439848af5d7afa82b5acae20ec81fb95a7c489d

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