Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae767c38b6a80bb7…

MALICIOUS

PDF

36.8 KB Created: 2020-08-27 13:31:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e89963432bc59c408f8fdcfe681ee5c1 SHA-1: c924edad2a53dd6a2e664d190928ad07126c475a SHA-256: ae767c38b6a80bb7d40f68e75d7435431803a9449eae4d4fa1876583a658257f
194 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many pointing to Shopify domains, but one critical link redirects to a known malicious domain. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=caligrafia+volume+1+pdf', which is flagged as a malicious redirector. This suggests the document is designed to lure users to malicious infrastructure by mimicking search results for a PDF.

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=caligrafia+volume+1+pdf In PDF document text
    • http://files.hudsonvalleybookdesign.com/uploads/1/3/0/7/130740563/9112005.pdfIn PDF document text
    • http://devuzojut.talkupyute.com/uploads/1/3/1/6/131606069/6af15d.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/1/0428/8515/2927/files/transformations_congruence_and_similarity_worksheets_answer_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2782/2752/files/enclosed_space_entry_seagull_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6377/9240/files/94099923579.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5386/7427/files/35325930097.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6547/5226/files/link_to_youtube_playlist.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4074/1275/files/cardioline_ar2100_user_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mutiga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9030/3393/files/vobukoroguvude.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0134/0319/files/loxalanonitamezifo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6481/9874/files/larox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5530/0249/files/kudunidudurobub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/4938/1022/files/sadeninuleves.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 7

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_off0000515b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x515B 5200 bytes
SHA-256: a4fecd8e58d7b6ebe01e956c9b4308e302c8a006fff28e971482b17959834640
font_01_sfnt_off00006308.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6308 10388 bytes
SHA-256: 363510c4238b1a01cec3130b75674ddfc8a241671b67093c3a7db3fabf3ac4ac

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