Malicious PDF — malware analysis report

Static analysis result for SHA-256 5bae94c11431051d…

MALICIOUS

PDF

43.0 KB Created: 2020-08-02 12:29:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 256f6269e80d88a9fd5e6e9a56851008 SHA-1: 91d9af4fe95218768fa16f113af2754c1ed123bb SHA-256: 5bae94c11431051d0eb76e3276ef6c72d9b0773ba32ba86529c59250a4dadcc8
194 Risk Score

Malware Insights

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

The PDF document contains a link farm and redirects users to a malicious URL, likely for phishing or malware distribution. The embedded content suggests a lure related to 'soa exam p sample questions' to entice clicks. The ML classifier strongly indicated maliciousness, and the presence of numerous external links points to a link farm strategy.

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=soa+exam+p+sample+questions In PDF document text
    • http://files.ibstonecircle.co.uk/uploads/1/3/2/6/132682976/e55a22bf8b1.pdfIn PDF document text
    • http://files.emilyeatkinson.net/uploads/1/3/0/7/130739525/lodejowo-mabofojofopim-mukorureri.pdfIn PDF document text
    • http://files.journeygenies.com/uploads/1/3/0/7/130740513/kirutuzedirexej_zetokopaze_pasumozodofir_serokoxutok.pdfIn PDF document text
    • http://files.iesno.com/uploads/1/3/1/4/131454503/mizenezeparap-subilaju-govuzetital.pdfIn PDF document text
    • http://files.rhlab.org/uploads/1/3/0/8/130814216/6081190.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/1/0429/0586/2307/files/13347664893.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0638/5558/files/81495180464.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1871/5289/files/27421872130.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9754/7157/files/17675338134.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9125/5713/files/jailbreak_iphone_5c_9._1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1141/5962/files/tazomewitusatob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kupenase.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2182/0313/files/65958506682.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/54748680829.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1841/9349/files/taxogusatefitademi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0009/4112/files/42476539263.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9419/5870/files/95649156626.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006181.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6181 5164 bytes
SHA-256: ea3354756d2e7181d79c3d5be20099cf42b9dee1a09a6daee9cfcdef51a2fc21
font_01_sfnt_off00007308.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7308 13916 bytes
SHA-256: 695440747bdf88e2e9bc783f4b695431ff238a88b73599cc6b9333be0b405404

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