Malicious PDF — malware analysis report

Static analysis result for SHA-256 7aabf175e957de10…

MALICIOUS

PDF

45.6 KB Created: 2020-08-15 10:42:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0b73b4e7be5befd5715a7e36096a439c SHA-1: 2ab717127e810bcc565a2ce7ad1d4c748a259d37 SHA-256: 7aabf175e957de10465b7d6b22c4dbfeab0309639623dbfb102d01216f44518a
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to a redirector service known for malicious activity. The document body, though heavily obfuscated, contains text suggesting a lure for 'clep test spanish study guides free'. The primary malicious URL identified is https://ttraff.ru/pify?keyword=clep+test+spanish+study+guides+free, which is also flagged by heuristics as a malicious redirector. The ML classifier strongly indicates 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=clep+test+spanish+study+guides+free In PDF document text
    • http://files.thingstodopuertoplata.com/uploads/1/3/1/8/131871687/litagedifoloki.pdfIn PDF document text
    • http://konejawip.miltonvthistory.org/uploads/1/3/1/8/131871674/nofukasexiva.pdfIn PDF document text
    • http://files.gapeachclean.com/uploads/1/3/2/3/132303312/2346569.pdfIn PDF document text
    • http://patiburiz.naderdeaik.com/uploads/1/3/0/7/130776688/veligo-nubolunusaweno.pdfIn PDF document text
    • http://lasumuzu.shortroots.com/uploads/1/3/1/4/131438563/7372110.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/1/0428/9839/1196/files/gasumititafarevotiwut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7488/7573/files/11115433520.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3110/9538/files/juxowabujetixafomox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8774/1607/files/92872074970.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0483/6515/files/biennale_cinema_programma.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4499/3181/files/98571993682.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4062/8120/files/kimadazid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/2283/8934/files/don_quixote_miguel_de_cervantes_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4614/2114/files/google_photos_screensaver.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3591/7464/files/hernandes_dias_lopes_marcos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9870/9918/files/fenebaxar.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 1

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_off000072ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72EF 5308 bytes
SHA-256: 7d4362bbdc13e21585877834eae8c042570c14cedee81352f63ae1946ca3118c
font_01_sfnt_off000084fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84FA 10796 bytes
SHA-256: d619c805864d082e81ee46b5962615318b5e9249445af3ae5b9259e15f63d888

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