Malicious PDF — malware analysis report

Static analysis result for SHA-256 d729cc031d44c063…

MALICIOUS

PDF

42.0 KB Created: 2020-08-07 02:05:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b18b94f7656390e34c1c489458b0a5cb SHA-1: 795914c0dbeb095682bce2463748b7a11c4712e7 SHA-256: d729cc031d44c0637d11d94252f127640a014d80e09d55952244b8253706f3f2
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body text, though partially corrupted, suggests a lure related to free PDF assembly tools. The heuristic firings confirm the presence of malicious redirector links and a link farm, indicating a social engineering attempt to drive traffic to malicious infrastructure. No scripts were extracted, but the primary attack vector appears to be the redirection to external malicious URLs.

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=comment+assembler+des+pdf+gratuitement In PDF document text
    • http://files.sigmaalphalsu.com/uploads/1/3/1/3/131378952/b8ae82d9.pdfIn PDF document text
    • http://files.threadsolelife.com/uploads/1/3/1/4/131438128/1e8a94f895.pdfIn PDF document text
    • http://files.outerreefjewelry.com/uploads/1/3/2/6/132680853/tuwejuf_rebekirar.pdfIn PDF document text
    • http://files.mybestmake.co.uk/uploads/1/3/1/8/131871740/sozuzidexilelu.pdfIn PDF document text
    • http://files.buckeyebulldogclub.com/uploads/1/3/1/6/131636834/xapofimorumo-kizasunukax-dikazolerexipos-fivexoju.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/1/0438/3683/3954/files/kulekupajatureriferalojo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0817/8850/files/lodish_molecular_cell_biology_7th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9202/6271/files/t_shirt_cutting_pattern.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5511/8501/files/nabamabu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2978/1918/files/58075637756.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8873/1543/files/wheel_of_misfortune_neopets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3724/6118/files/kajufawetunadexe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3476/2654/files/36398008831.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0346/9221/files/xifakakolaxit.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 4

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_off000061a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61A1 5404 bytes
SHA-256: c7a13bc01692cd0a8e441985c1db3e1416f7f50d59b8a44bca40c24c4dd7d315
font_01_sfnt_off000073dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73DC 11700 bytes
SHA-256: 870a62166fb80910cd943eab68ba32e7c454c2fb5e6014b434309c41977a0be4

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