Malicious PDF — malware analysis report

Static analysis result for SHA-256 0183715a851d5da3…

MALICIOUS

PDF

47.6 KB Created: 2020-08-04 17:33:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0582a61c28d29ac9e9bc8b4ee1994794 SHA-1: d948257c08c5cb161d6da5c673c582a615f8711a SHA-256: 0183715a851d5da3508923f9a39a05068bb111c236206c9ef086c130672d56c6
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector service, indicating a link farm or phishing lure. The ML classifier strongly flagged this PDF as malicious, and heuristics confirm it links to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains URLs that are part of this link farm, suggesting an attempt to drive traffic to malicious 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.cc/pify?keyword=camera+lucida+microscope+pdf In PDF document text
    • http://files.oceanaparkwelshstud.com/uploads/1/3/2/7/132740352/tebivoxufameb_xures_gebinu_natuwizulosano.pdfIn PDF document text
    • http://files.evergreenpark1171.org/uploads/1/3/1/6/131637919/zitetuladag_wawalisepaje_kuxenumo_gidimifukegaji.pdfIn PDF document text
    • http://files.silkbodywaxingstudio.com/uploads/1/3/1/4/131438741/5058799.pdfIn PDF document text
    • http://files.nadiahgoff.com/uploads/1/3/2/3/132303010/wujunib.pdfIn PDF document text
    • http://files.goundoctored.com/uploads/1/3/1/6/131636655/5207962.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6174/7605/files/fujosuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3684/3933/files/55504187920.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5207/2086/files/fallout_new_vegas_ultimate_mod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5201/4495/files/beginner_core_workout.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9849/5389/files/xabutubutujutagaxifimodu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0307/4984/files/les_vetements_activites.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8355/4202/files/39962064493.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0792/5654/files/commutative_and_associative_properties_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9422/8630/files/43775487563.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1079/3370/files/23012186766.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006fed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FED 5020 bytes
SHA-256: ffcd60cc500756660333644acd521a02cd67f929771c57052a3cc262dcab5428
font_01_sfnt_off000080fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80FE 10196 bytes
SHA-256: f0d6f89ef67f78e167199e2003459ddaf792fd3fcc8ba47730377a9bf4ecb191
font_02_sfnt_off0000a3d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA3D9 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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