Malicious PDF — malware analysis report

Static analysis result for SHA-256 d838b5adf6df9a96…

MALICIOUS

PDF

32.9 KB Created: 2020-08-03 09:21:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 663df3355c18ad9269b3002e91d0891f SHA-1: b1ff2feae349fd1d757b3db09c2c425e14b620d3 SHA-256: d838b5adf6df9a9641e4322380e06c067ef806fe68cb7b78fd156a952a8e920a
194 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=metal+gear+solid+ringtone'. This indicates the document's primary purpose is to redirect users to malicious infrastructure. The presence of a PDF link farm further supports a social engineering or spamming attack vector. No scripts were extracted, and the document body was heavily obfuscated, limiting further analysis of the exact lure.

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=metal+gear+solid+ringtone In PDF document text
    • http://files.radpanovphotography.com/uploads/1/3/2/7/132740281/teradigifekosege.pdfIn PDF document text
    • http://files.hagerbekel.org/uploads/1/3/1/8/131871744/5055287.pdfIn PDF document text
    • http://files.vickisoarart.com/uploads/1/3/1/4/131410479/girugifuni.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/1/0440/5103/8358/files/55920401518.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6427/9718/files/c_hash_table_implementation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1264/4251/files/minecraft_discord_servers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1649/3976/files/sitekosaduxewu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9059/9319/files/58747238935.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1184/1958/files/repapetewonewaviniwav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3874/2430/files/baselakufatuzititamemo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1024/4256/files/fizujozulamoribezagil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2128/7080/files/71006000517.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4565/0586/files/14802142919.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7702/6463/files/zifidulozetuwezoruto.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 6

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_off0000431b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x431B 5000 bytes
SHA-256: f3590bf9107ef4a4a5ae84c494bde91cc22d34ae24831768a07616488eb347d2
font_01_sfnt_off00005433.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5433 10168 bytes
SHA-256: f7b2ff23ca228c58fcef4d4ced596240f1a5777aaae99adad96bc491b3923cd8

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