Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c8a6e5ffa9dc7c0…

MALICIOUS

PDF

45.9 KB Created: 2020-08-01 05:09:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8e28cc8c901fb7eb0d17300398218de6 SHA-1: fba85ebb446d8fce6ef7b6754e83991f4404bb34 SHA-256: 0c8a6e5ffa9dc7c047237de819b345740e544fa3d2de448572651889f337d1fc
194 Risk Score

Malware Insights

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

The PDF contains embedded links and text suggesting it is related to interview questions, but analysis reveals it is part of a link farm designed to redirect users. The primary redirector URL, 'https://ttraff.com/pify?keyword=interview+questions+for+assistant+principal', is flagged as malicious. This indicates a likely phishing or malware distribution attempt, masquerading as useful content to entice clicks.

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.com/pify?keyword=interview+questions+for+assistant+principal In PDF document text
    • http://files.waytobe.net/uploads/1/3/0/7/130738628/zazokavum.pdfIn PDF document text
    • http://files.platinumpoolsandpatios.com/uploads/1/3/1/6/131637014/purof_kanavenalojewew_wifudo.pdfIn PDF document text
    • http://files.morroandjasp.com/uploads/1/3/0/9/130969375/wojerodijudo.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/1/0431/3497/6157/files/wurivuvizipisorali.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8321/6549/files/fotapizozekevavatokajo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7678/0192/files/ferunowaxewogitizam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2920/8992/files/dotaviwipobiwi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/libidurekatomanazavevufi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6598/3655/files/fesonaxawuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6504/0286/files/xepegaromerusemimik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2422/0321/files/kadokufiwamizakokujepapu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8004/6997/files/bupimurazaluzegob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2831/5288/files/72638074058.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9635/8565/files/the_hunger_games_free_online.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_off00007563.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7563 5224 bytes
SHA-256: 381e5ca31e308ba09d13c65552a755d485df6ba32a59880b0c2a05bf4ea2e020
font_01_sfnt_off00008754.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8754 10444 bytes
SHA-256: 2f464d5db2e0eeaba2450e8e0be3addd309f291225a67acbc583e423fe83a82b

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