Malicious PDF — malware analysis report

Static analysis result for SHA-256 83492ba3809e4eeb…

MALICIOUS

PDF

43.8 KB Created: 2020-08-22 02:30:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 676c534b17ee276c48cd274c49dcc216 SHA-1: 8e62f321b1cbe5a3a9d00c317f89477ede1daef7 SHA-256: 83492ba3809e4eeb067e954f730e9fc93ed06c378c2393d35c84820320e6d7ec
194 Risk Score

Malware Insights

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

The PDF contains a link farm and a redirector URL, indicating a phishing or scam attempt. The ML classifier strongly suggests maliciousness. The document body, though obfuscated, contains text related to candidate performance and a URL that likely leads to a malicious payload or phishing page.

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=candidate%2527+s+overall+performance In PDF document text
    • http://saxuraj.detailedbyandrew.com/uploads/1/3/2/6/132682790/tatul.pdfIn PDF document text
    • http://files.weststanlybaptistchurch.com/uploads/1/3/0/7/130739688/2560017.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/1/0432/5523/4710/files/ase_study_guides.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7643/5621/files/jakaxamawukawi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5378/3957/files/73404533757.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xirapekewovefosisukepeja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4155/3575/files/38441226295.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9289/2061/files/45511078954.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6423/9014/files/maths_basic_algebra_formulas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/rodol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5900/9943/files/carbon_dating_examples.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6331/1512/files/kexobunozisimegupowi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0041/4883/files/64620642123.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 2

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_off000061df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61DF 5204 bytes
SHA-256: 76488c592820ab5b1cc8ccf39c65750a0516feb1b79bbf276230200e65e50bde
font_01_sfnt_off0000738b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x738B 9624 bytes
SHA-256: d6e98fb6cdad4d78c466608f8635b54579b0cda1ccf45ee56dd903316d1aa7ed
font_02_sfnt_off0000947a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x947A 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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