Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ef8bb77091a7b95…

MALICIOUS

PDF

39.7 KB Created: 2020-07-24 22:29:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ece9fad97986b4f45c585432ccea3825 SHA-1: 984cb853df859a30009efa4dc392c9f04908afb8 SHA-256: 5ef8bb77091a7b95008dc43c680a0884561ca86fcbcf151befbf108397a81df7
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 heavily obfuscated, appears to be a lure for 'metal gear solid 2 apk', suggesting a phishing or scam attempt. The presence of numerous external links, including a link farm, further supports the malicious intent of directing users to untrusted sites.

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=metal+gear+solid+2+apk In PDF document text
    • http://files.dominiquedunstan.com/uploads/1/3/1/8/131857494/3172947.pdfIn PDF document text
    • http://files.casasad.com/uploads/1/3/1/4/131406506/vorefoguloz.pdfIn PDF document text
    • http://files.beholdvisiodivina.com/uploads/1/3/1/3/131398334/melitozilipu_fumiwewed.pdfIn PDF document text
    • http://files.mindyourbodyfitnessandnutrition.com/uploads/1/3/0/7/130775628/19f97.pdfIn PDF document text
    • http://files.spyratoschiropractic.com/uploads/1/3/1/6/131636589/tawuzugozafoxibav.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/1/0433/4757/4943/files/webabekejir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6228/8793/files/28768429022.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/66541571973.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7879/4920/files/tedopakem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zupapinited.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2630/7480/files/48031611948.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8578/3447/files/vubavedigaluduzazumodovo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/99914628395.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9952/1181/files/72025611315.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7950/7880/files/80661634950.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_off00005e1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E1C 5012 bytes
SHA-256: dcb2ed6c179db2e904b4895e8bc9bac3f5debe1bf4aa6eaa0a5302e4ce2d19de
font_01_sfnt_off00006f45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F45 10204 bytes
SHA-256: 44a8e68366adc1fcb45f0f242d18ffd0698acd4787ee7a19b5752392bd69cb68

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