Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b93a6aa3d265064…

MALICIOUS

PDF

40.5 KB Created: 2020-08-22 15:24:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7f01d39f7762b867fa70207ee97c2666 SHA-1: 9e91c235b62cc2859df28f2a8922cf766e31f095 SHA-256: 9b93a6aa3d2650644330cc94fe435193eb204d90e3ff00ca00b4a6484e45045f
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=general+aptitude+test+sample+questions+and+answers'. The document body also contains this URL and numerous other links, many hosted on Shopify, suggesting a link farm or SEO poisoning tactic to distribute malicious content. The primary intent appears to be redirecting users to malicious infrastructure under the guise of providing test sample questions.

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=general+aptitude+test+sample+questions+and+answers In PDF document text
    • http://files.milaspreschoolandccc.com/uploads/1/3/1/3/131383661/9241220.pdfIn PDF document text
    • http://files.piersonpsychology.com/uploads/1/3/2/8/132814272/vikotuxupo.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/1/0435/3415/5928/files/junuwidikuxofitela.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/1482/7677/files/review_of_transistor_biasing.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3826/7809/files/tonapoxur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5937/2439/files/wezilomux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9417/2058/files/pozoluxutemozala.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1498/7682/files/kojetimoruxuvi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7455/0950/files/bungee_font_mac.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6103/5686/files/41489653964.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6288/6549/files/75822341926.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7130/5896/files/pawigomenabusezupivojezi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/4160/8100/files/calligraphy_sheets_for_beginners.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7181/3285/files/toxodu.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_off00005ef9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EF9 5352 bytes
SHA-256: 492ed17c8248792956d666eac91ed87c9be0c90107b1dd90f5919b541218dc35
font_01_sfnt_off00007128.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7128 10524 bytes
SHA-256: 902fdab2ad2c4beb613b4cc5e82396a581d5832dfef4268c653e9a4600b0ede6

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