Malicious PDF — malware analysis report

Static analysis result for SHA-256 c027f2315686af81…

MALICIOUS

PDF

47.4 KB Created: 2020-08-06 09:41:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: dca4ba57a464204875a22d21ddf47921 SHA-1: e16d9ce11b1484c6613a874cda0ae73a70203d4b SHA-256: c027f2315686af810b20515d3ce14bf276431b92e75c85c81c528bde9d36cfab
194 Risk Score

Malware Insights

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

The PDF contains a mass of external links, including one pointing to a known malicious redirector infrastructure at 'ttraff.cc'. The document body text, though corrupted, contains the phrase 'financial market interview questions and answers pdf' and the malicious URL, suggesting a lure to trick users into clicking the link. 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.cc/pify?keyword=financial+market+interview+questions+and+answers+pdf In PDF document text
    • http://files.a1alarm1980.com/uploads/1/3/0/8/130873848/pepapom-tamewesil-durol-jijefuduwabono.pdfIn PDF document text
    • http://files.theodoreleadership.com/uploads/1/3/0/9/130969300/2789a45c5d4489.pdfIn PDF document text
    • http://files.westphysiotherapy.com/uploads/1/3/1/3/131379801/0dd8a7e2e39ce7.pdfIn PDF document text
    • http://files.blackdalhiaarts.com/uploads/1/3/1/0/131070751/xudobekudutukiludaxa.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/1/0428/6224/8102/files/wemisizirepudobaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3599/8880/files/baucis_and_philemon_story.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8556/8923/files/55669387132.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8688/9639/files/poxila.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9462/1862/files/applied_calculus_hughes-_hallett.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4111/1716/files/suramukuzenulokonumojiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gamusuzojikifikukudubug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1339/7924/files/actuarial_mathematics_for_life_contingent_risks_solutions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0196/0854/files/22337933051.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1687/1333/files/vault_girls_webseries.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 5

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_off00007a1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A1B 5596 bytes
SHA-256: 2cfa2558dbc64a79419ef3504465c103a677b12239c88074eb618defe89a6c51
font_01_sfnt_off00008d23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D23 10324 bytes
SHA-256: 23bf86667fcdc5fca16e6d72ed3e3d3b5c2b5f18eda733bdc3f83ea234ade569

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