Malicious PDF — malware analysis report

Static analysis result for SHA-256 682e251d79488fb8…

MALICIOUS

PDF

119.5 KB Created: 2020-08-13 15:40:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2c43118afe08a2b4c05af27752214271 SHA-1: 7928bd44e00807bb26dbf4eaf1f8fa8fd675eb4d SHA-256: 682e251d79488fb8c80886b6b502833f7ff61d2c7ddd026156eec99ba0a1e2e1
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic firing indicating it points to known malicious redirector infrastructure. The document body, though partially obfuscated, contains a URL that matches the redirector found in the heuristics, suggesting a phishing or scam attempt. The ML classifier strongly supports the malicious verdict.

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=alman+dili+5+ci+sinif+pdf In PDF document text
    • http://rerunu.creativecakeatiers.com/uploads/1/3/0/7/130738884/dewewuris.pdfIn PDF document text
    • http://files.synbim.co.uk/uploads/1/3/1/4/131438899/236290.pdfIn PDF document text
    • http://files.cashanafrica.com/uploads/1/3/1/4/131454255/1f13b8c3411a.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/1/0435/7813/0593/files/jimubolowuvodizirekex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4944/2713/files/76592908442.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6174/7605/files/17871708579.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5335/7985/files/amd_radeon_hd_5450_driver.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8730/5629/files/jekexij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6276/3425/files/wrinkle_in_time_graphic_novel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1655/2605/files/gakanapoxoxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7257/0012/files/59576669396.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6750/6849/files/rumupimep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8561/0654/files/woritojofip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5098/2821/files/35447549864.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4976/1433/files/acuerdos_comerciales_preferenciales.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9145/2314/files/84313036808.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00017dfa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17DFA 5316 bytes
SHA-256: bb6a1ee66fc24a1a1e218bb807fba1c538c3b337dee0e6fc267aae00cf29dd6e
font_01_sfnt_off00018ffe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18FFE 14516 bytes
SHA-256: ebeabaf69e011e134b65fee59ccc50c424f59be28345da8a5719f56f2036253c
font_02_sfnt_off0001bc7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1BC7B 16060 bytes
SHA-256: d1a84ba8f0e4a827a048d387db8dd5dae3538f1c7e72415b16af587a9947cdc7

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