Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a30fd4b80f31dee…

MALICIOUS

PDF

34.8 KB Created: 2020-09-09 22:07:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0f49264c1e2c0c43cdc0438eb4a1d1f8 SHA-1: af330f00a262b8f8bbc66cb0d12196ac0eb89016 SHA-256: 7a30fd4b80f31dee06881ecf2c000a080084bd6fcb1bb5b9b628f3c53b1bbfd1
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to redirector infrastructure and SEO link farms, indicating a phishing or malware distribution attempt. The ML classifier strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains a URL that appears to be a lure for 'Coulomb's law lab report conclusion', suggesting a social engineering pretext.

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.me/pify?keyword=coulomb%2527+s+law+lab+report+conclusion In PDF document text
    • http://vutej.themagiciansindicator.com/uploads/1/3/0/8/130873958/vexejasuxi.pdfIn PDF document text
    • http://files.pnwcollective.com/uploads/1/3/1/0/131071114/zimopitawolaj_jojig_sojexoloduwuk_woxefe.pdfIn PDF document text
    • http://pibod.stoppaydayloanspa.com/uploads/1/3/1/4/131437246/menezilifug_jigir_turigepusi_zivufasituzeda.pdfIn PDF document text
    • http://files.blackpeakstudio.com/uploads/1/3/0/7/130739718/75690.pdfIn PDF document text
    • http://sezixe.surplususastore.com/uploads/1/3/0/7/130776208/3627723.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_2be55c7e8b444c1fa019757a913632e9.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/ceb2e8_fc55b2db2b0c48f5a821271da56a61b1.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/ade4e6_e9e7fa1d4e0340d78732641852565552.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/2826/2560/files/downloads_whatsapp_for_blackberry.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7274/8710/files/career_chart_after_12th.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9180/3801/files/guia_autometrica_gratis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7509/9029/files/14143180224.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 7

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_off00004980.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4980 5248 bytes
SHA-256: 33377263864f5d87aac7322ef98c22ec785f8f8a4111885f3d32521b9124e150
font_01_sfnt_off00005b52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B52 10404 bytes
SHA-256: abeb08d7905580d189e69a3b097ee6b7d51105a04446e33aa25c960b00c11ccc

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