Malicious PDF — malware analysis report

Static analysis result for SHA-256 f42f00e5873e50f7…

MALICIOUS

PDF

42.4 KB Created: 2020-08-28 08:03:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 061242f929f4575da07ed535a911e5f2 SHA-1: f7bc03a55c9ae9ef9f8990b1dd2f30d64d479b8f SHA-256: f42f00e5873e50f763faf2fbda8e1c08f4f6e1f729308421cc1eaa571a15d6ab
194 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a book title, which is a common lure for phishing or malware delivery. The ML classifier strongly indicated maliciousness. The document body contains the primary malicious URL and several other URLs pointing to PDF files, likely part of a link farm to improve search engine ranking for malicious content.

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.club/pify?keyword=ensayo+del+libro+para+combatir+esta+era In PDF document text
    • http://files.medspabeautyescape.com/uploads/1/3/1/8/131856883/bugabugafuk.pdfIn PDF document text
    • http://lowiful.tamramccarthy.org/uploads/1/3/0/8/130814328/xilukedupopiwul.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/1/0433/1975/4907/files/petog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8316/0995/files/julilafulogezupogomovusat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1117/7629/files/retroarch_keyboard_controls.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5335/1066/files/rozotawajotati.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3557/4943/files/90646028641.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6126/5062/files/91365071195.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7541/9812/files/99389849473.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0635/9713/files/marcus_aurelius_philosophy.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9435/1778/files/fazoveda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7833/6158/files/dedosapupelole.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9780/1375/files/domestic_animals_flashcards.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8520/9506/files/1987722061.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 3

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_off0000652a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x652A 5420 bytes
SHA-256: 9875874b44579fde4df48ad41afbf8b2876d6bcea85a5e14227dab78e81a8a5a
font_01_sfnt_off0000777a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x777A 10800 bytes
SHA-256: 9f7eeee4bfdabf05375c30f306f6cc0f198ddf001f3cf28578adfcd8b9dcb37d

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