Malicious PDF — malware analysis report

Static analysis result for SHA-256 c76d18af47d135b2…

MALICIOUS

PDF

49.1 KB Created: 2020-08-12 12:22:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: abc4d39c9613a8d754df293a2a48bf9d SHA-1: f8a33d24fb72a474ba1b99e386fcfc4ba8362619 SHA-256: c76d18af47d135b2813871f12360f18c8a520ac05a19b50c24a5bd6bf641d30c
202 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious redirection and a link farm, suggesting a phishing or scam attempt. The presence of a 'download button' lure and a redirector URL like 'https://ttraff.ru/pify?keyword=the+pavement+bookworm+pdf' strongly suggests the document is designed to trick users into navigating to malicious infrastructure. While no scripts were directly extracted, the PDF structure and link farm are indicative of a malicious workflow.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=the+pavement+bookworm+pdf In PDF document text
    • http://files.techniquejobs.com/uploads/1/3/1/4/131482975/toxemoxuwera.pdfIn PDF document text
    • http://files.dogscantflush.org/uploads/1/3/1/6/131606325/zamubal_jisumadilewit_rebopurupej_zivipoluve.pdfIn PDF document text
    • http://files.pcrws.com/uploads/1/3/1/4/131406947/5654271.pdfIn PDF document text
    • http://files.renditionsfurniture.com/uploads/1/3/1/3/131381542/kixik.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.indictrans.orgIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6590/1210/files/fopukokomajujasevuded.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0124/9955/files/16383154737.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1329/9620/files/important_days_list_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5100/5590/files/effective_academic_writing_1_answer_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0876/1764/files/zujevakena.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4865/5265/files/fozixukibi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5653/7493/files/yazaki_cable_catalogue.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9422/8630/files/gowukukazijib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8244/1113/files/xitoliwakunawiminixuzeti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0097/8853/files/68942128587.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4677/2629/files/78610948492.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7937/6798/files/27504553347.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4874/7676/files/63165928819.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0127/3758/files/wodajilazabezelajupunovi.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000067fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67FD 5376 bytes
SHA-256: f3d63a50cf2dde058733ed20b8b94abfcedf86697f2dc202074a7ac9510298b6
font_01_sfnt_off00007a34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A34 4700 bytes
SHA-256: 435d91970d2374bdae1fb33b85c3617dedd99c3b7640fa5d724addb9bddac522
font_02_sfnt_off00008927.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8927 15116 bytes
SHA-256: c5b24bdc7398ef4f7ce3b49aca8b309760b65f3955efe7a03dd03f032c4886ec