Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5ad44843592ea91…

MALICIOUS

PDF

43.2 KB Created: 2020-08-01 22:39:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a85ab7a6edba86a7d47e831cfd1c2d64 SHA-1: 04b45397a0c7d75866c9357cc7b02c2701cc7bb2 SHA-256: f5ad44843592ea912f160da0413d5f2404de2ee0a90a7b5a088f34f2aebf53d2
234 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a lure related to changing Windows 10 user account details, which is a common tactic for phishing or credential harvesting. It embeds multiple links, including one to a known malicious redirector at 'ttraff.com', and a large number of links to PDFs hosted on Shopify. The heuristic 'SE_PAYMENT_REDIRECT_LURE' further supports the phishing pretext. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • 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.com/pify?keyword=windows+10+change+user+name In PDF document text
    • http://files.davidmichaeldesign.com/uploads/1/3/1/6/131636766/3ab714.pdfIn PDF document text
    • http://files.smileschildrensclubs.com/uploads/1/3/2/3/132303269/9493299.pdfIn PDF document text
    • http://files.brandow-law.com/uploads/1/3/0/9/130969944/0d327e8792b.pdfIn PDF document text
    • http://files.writercassmichaels.com/uploads/1/3/2/6/132681295/5c425baa9.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/1/0433/0687/7080/files/polonafebomi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6482/8838/files/1746561988.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0741/7253/files/66002450844.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0315/0499/files/74524980263.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3094/5693/files/97489006726.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1167/7083/files/47900700083.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3526/1085/files/skyrim_better_faces_mod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8799/5814/files/48650337558.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0399/2485/files/zemukisopamaka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/36283751979.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_off00006ac9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AC9 5620 bytes
SHA-256: 33a9009b93fba37f310582bf7523b8f18d127987d880f9c6afca7bbdf229568f
font_01_sfnt_off00007ddb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DDB 9936 bytes
SHA-256: 187b0d917307df65ef4d8cf33f6fbdd7deddc7ee214a0900010fa5c19c1a51da

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