Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0b3e1437d60ee90…

MALICIOUS

PDF

39.6 KB Created: 2020-07-31 21:02:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 25c78b6beeba2c57a608350c356955de SHA-1: f05cd05346caca3c71f79234c83b5b1eb25a45a0 SHA-256: a0b3e1437d60ee9073d1a452b2d73324251531bf4ffeb1ef9a0d59114272cab3
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, a technique often used for SEO poisoning or to direct users to malicious sites. One of the primary links, 'https://ttraff.ru/pify?keyword=what+is+aae+file', is flagged as a malicious redirector. The document body, though heavily obfuscated, contains references to URLs, reinforcing the link farm attack pattern. 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=what+is+aae+file In PDF document text
    • http://files.asensioresearch.com/uploads/1/3/2/7/132741211/6573953.pdfIn PDF document text
    • http://files.outlinebuddy.com/uploads/1/3/1/4/131455069/7092922.pdfIn PDF document text
    • http://files.nazarenesforcreationcare.com/uploads/1/3/1/3/131379496/fikomagizezi.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/1/0434/2205/6600/files/43508153483.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6497/4742/files/rimiwesekikawinin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1629/8393/files/86571208578.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3382/9277/files/xoxonovurisoguwomow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7016/8986/files/namevobavop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3493/4429/files/ziputaxakemajexefale.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4749/3536/files/majire.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0147/0366/files/tikaxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0201/9487/files/wefuxitugalejekepeduzut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5609/4615/files/89833413729.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
🗂 Part of campaign: asensioresearch.com 3 samples

Related samples 4

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_off00005f46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F46 4772 bytes
SHA-256: 19d2d21c779e5be8fb455f631904285d790c0291c99dc8abe05a6d27fd4288f2
font_01_sfnt_off00006f91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F91 10032 bytes
SHA-256: 430ca0f4e9ceaed232781b2f0dcff72a76c491a565258b737965cf87ba8dbb29

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