Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f4d30bbf389c7a5…

MALICIOUS

PDF

39.6 KB Created: 2020-09-10 22:20:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 02a91ac6238e2b9e05db2233a6a8d520 SHA-1: 8b1edb60f4f3f2b9a5fc86af8234605a46b2afee SHA-256: 4f4d30bbf389c7a53735ecb30e04fc8d22838a9b70aac045e08c1a4c5c3be9a5
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, includes the URL 'https://ttraff.club/wix?keyword=cadent+gas+annual+report+2016', suggesting a lure to a malicious site disguised as a report. The presence of a large number of external PDF links further indicates a link farm or redirection 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.club/wix?keyword=cadent+gas+annual+report+2016 In PDF document text
    • http://saluge.rubbermonsters.com/uploads/1/3/2/6/132695663/vakajamexedadopafezu.pdfIn PDF document text
    • http://files.eic-llc.com/uploads/1/3/1/4/131437513/6234631.pdfIn PDF document text
    • http://towebet.stoneofhopeyouth.org/uploads/1/3/1/4/131409236/2c949748ced5e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static.usrfiles.com/ugd/81d6a4_9822fbb3685446498765f37bcebc769d.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/ace02d_b710c629abee4e3c8813f44a6c6104ff.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/fa6f14_6aa780e5af164af78610a68939b52d44.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/bf650e_ced4fb95d154497382f58aab9b9b56a2.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/97368a_a7eda392ff264cb4b2d89609a20b2c68.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2864/9896/files/allah_ke_bande_hasde_pk_song.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8899/2674/files/anaphylaxis_guideline_pediatric_thai.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2060/6885/files/24356095971.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6350/9143/files/saxopusupaxasoposuvesaz.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/f6336d_f5fc176895ee4068915e2f0b4058643c.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/9b33c5_9cd265f0211d4caaaba36899e91664ca.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/2e16aa_39e8557ea7374761935453b0e1f392e7.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/ade4e6_d43fb1d49df74a0d979a37d7fd83ce59.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 5

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_off00005b81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B81 5512 bytes
SHA-256: 9a2572c7575d7626db744569b6d227130c3332f48140df072cca2ed9937bdeb9
font_01_sfnt_off00006e4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E4E 10208 bytes
SHA-256: 75f22065d596f437588e753212c86445c914416dcd60671bb0753f6ec2f31e0c

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