Malicious PDF — malware analysis report

Static analysis result for SHA-256 d19834732c9ce5e6…

MALICIOUS

PDF

38.7 KB Created: 2020-08-09 22:02:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d221a78edf150fecfaf4724a15b87388 SHA-1: d2e8c7d7ba7199077e261dcf36f88023b6decb1d SHA-256: d19834732c9ce5e6d5e4f7f3a1f5e0baaad57a8737d463f7d6f38f255f0528ab
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains embedded links that redirect to a known malicious URL, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body and numerous extracted URLs suggest an attempt to manipulate search engine results or lure users into clicking malicious links, likely for phishing or malware distribution. The ML classifier also strongly indicated maliciousness.

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=paris+talks+abdu+l+baha+pdf In PDF document text
    • http://files.sanantoniosalsaon2.com/uploads/1/3/1/6/131606094/1774963.pdfIn PDF document text
    • http://files.352coaching.com/uploads/1/3/1/4/131453636/tixukef.pdfIn PDF document text
    • http://files.michelleclarkvm.co.uk/uploads/1/3/0/9/130969313/80d6db4dae0.pdfIn PDF document text
    • http://lugamu.williecosta.com/uploads/1/3/0/8/130874655/4045253.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/1/0433/0687/7080/files/lonuxifipepi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1302/0570/files/nedafolasebowamanisijo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8706/9348/files/10462851746.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7728/8611/files/occupational_safety_and_health_journal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/1324/5848/files/disable_dns_lookup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8879/6065/files/nordstrom_employee_handbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/9296/3484/files/77461853324.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5358/0437/files/41269878782.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3846/4405/files/reduced_adverb_time_clauses_exercises.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4634/5640/files/pezipekuzis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1430/5430/files/zimumokajuvurinisusi.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_off00004c8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4C8F 4884 bytes
SHA-256: bee3425569f8899c001161d1b4da7f2e8fa8b297a79ba55cec62dad50a05bafd
font_01_sfnt_off00005d1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D1F 10364 bytes
SHA-256: b8710be7858c3f1ad9129a61dff67b0681924a50b7e625b2b09a70ccf75a1c8a
font_02_sfnt_off00007ff3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FF3 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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