Malicious PDF — malware analysis report

Static analysis result for SHA-256 0498cb03ebbe2cc5…

MALICIOUS

PDF

49.4 KB Created: 2020-08-24 09:03:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8de00d1a00626c06d5af7f0e44b355f9 SHA-1: 909d7c46cf804bea2cd2130ab40e3c3741f346eb SHA-256: 0498cb03ebbe2cc50c941414a7bc6dd9daf1dd04755398063c4f6be9807b8f30
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to a known malicious domain, suggesting a phishing or malware distribution attempt. The document body, though heavily obfuscated, contains the malicious URL, indicating the primary intent is to redirect the user. The presence of numerous external PDF links also points to a link farm or SEO manipulation tactic.

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=kirchhoff%2527+s+current+law+derivation+pdf In PDF document text
    • http://files.jiyongkimm.co.uk/uploads/1/3/1/4/131409128/987622.pdfIn PDF document text
    • http://files.diabetesrelatedretinopathy.org/uploads/1/3/0/7/130776152/e619931c06c.pdfIn PDF document text
    • http://files.knitnatural.com/uploads/1/3/0/7/130775493/6634e9db6824.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/1/0430/7743/5556/files/arduino_pro_micro_pinout.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1608/5923/files/85490253790.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5665/0645/files/pafilanetipusupesuvep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9199/2480/files/gimojatipa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8148/1884/files/cheat_engine_6._7_windows_10.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8769/9876/files/house_building_plans.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7313/2961/files/xawaridepasajukuzoju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4949/2384/files/jph_sociology_class_11.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 1

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_off000069f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69F6 5400 bytes
SHA-256: 9571aa37ef98ca455f19400ef88fa90bdf4f36501288a02ffed899a42bc3f599
font_01_sfnt_off00007c68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C68 11052 bytes
SHA-256: afbbf6258629502ff0974fd07229d99a90e898cc6161e98a6dbcf8bdc3a88114
font_02_sfnt_off0000a27c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA27C 16332 bytes
SHA-256: 45aafc659c27aee3bb47d3e4ec9a1f0673b619c4c502148d582ac7091e2e8f5d

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