Malicious PDF — malware analysis report

Static analysis result for SHA-256 24157622c126a105…

MALICIOUS

PDF

40.7 KB Created: 2020-08-07 15:46:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 72e5d03b3893f0f3a37b69f5234b3252 SHA-1: 529dc1acdcde21d9d12e10aa8ac66f7557a4d55c SHA-256: 24157622c126a105471d0bc2f7ac348d002dff659bce9eb624123743949053f2
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, pointing to 'https://ttraff.ru/pify?keyword=bypass+capacitor+calculation+pdf'. Additionally, it features a PDF link farm heuristic, indicating a large number of external links, many hosted on Shopify. The document body, though heavily obfuscated, contains the same redirector URL. The primary attack pattern involves tricking the user into clicking the malicious link, which likely leads to a phishing page or malware download.

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=bypass+capacitor+calculation+pdf In PDF document text
    • http://kilux.cynchitpants.com/uploads/1/3/0/7/130776445/98a23.pdfIn PDF document text
    • http://files.healthnutdiets.com/uploads/1/3/1/8/131858592/36002dc7e99.pdfIn PDF document text
    • http://files.westmountwildrugby.com/uploads/1/3/0/7/130740323/89f42d093.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/1/0435/2727/4645/files/5495853902.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2741/4696/files/32529500327.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2829/7381/files/meniwekaxogop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1763/3949/files/fepajewavefugiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2520/3354/files/91228365159.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8163/7794/files/burulamamobit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3346/7807/files/multivariate_uniform_distribution_pdf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9173/8277/files/tozepakozef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5443/0368/files/87893070373.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5729/9097/files/luvepegitaxoxuwudinomumod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3672/8744/files/39117524637.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2004/0866/files/3829671389.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_off000062ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62AE 5300 bytes
SHA-256: fe498ae3cf27d20a82cc5e78da74e98bab7aa795ff532206f05a3ff720350c42
font_01_sfnt_off000074d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74D0 9724 bytes
SHA-256: 11622bfe905cfc261952ed3f3d1cdbf4c710864f9905d39313c01ea8acb4e86d

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