Malicious PDF — malware analysis report

Static analysis result for SHA-256 f67a92014bc9e15a…

MALICIOUS

PDF

68.2 KB Created: 2020-08-05 16:42:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 045018b35fa09c0dd1b73a3f05c9adb6 SHA-1: 44a4535ba55252b421b2174bb8086bb879050dbc SHA-256: f67a92014bc9e15a85cda0ed05730802abf6b5699f3c450c6e305d74e1510fc3
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.ru/pify?keyword=bash+shell+programming+tutorial+pdf'. This URL is presented to the user as a "Bash shell programming tutorial pdf", indicating a social engineering lure. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many of which are hosted on Shopify but point to potentially malicious content. The ML classifier strongly supports the malicious verdict.

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=bash+shell+programming+tutorial+pdf In PDF document text
    • http://files.learntodaytutoring.com/uploads/1/3/0/7/130775350/e2df50db.pdfIn PDF document text
    • http://pibatex.comoxvalleyringette.com/uploads/1/3/2/6/132681443/4c8f67c02f6f.pdfIn PDF document text
    • http://files.lowcountryliberals.com/uploads/1/3/0/7/130775867/jazomowaseda_jegop_pusopadafaxemu.pdfIn PDF document text
    • http://files.movementmatters.net/uploads/1/3/0/8/130873708/dexapu.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/1/0433/5045/8520/files/morufuvifatesumixup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/98973723668.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7837/5831/files/evangelio_apocrifo_de_judas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5754/5365/files/kimisinirezeruzugudapep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6058/4870/files/auto_tune_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8632/1566/files/seforewikuxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5569/3470/files/shopify_landing_page_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9075/6259/files/73564224273.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4651/0504/files/fuvenekalarobir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9648/7576/files/nigerian_banking_industry_overview_2020_pdf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0881/9349/files/54428390212.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 4

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_off0000cac4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCAC4 5504 bytes
SHA-256: 3a5a3ab76c2e1572988f83867110df5d39f9288fc687790fdb30ac3a008a712a
font_01_sfnt_off0000dd53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD53 11604 bytes
SHA-256: 0bf8482d8bcd79e328f150257daec34c5855135b1c8d3f01ac79efe8f3fe069a

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