Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ef115d373fdf3db…

MALICIOUS

PDF

55.1 KB Created: 2020-08-07 20:57:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ce388f1f3a28f11a246bac873815117c SHA-1: a1d0b6171c703cf4f962f911d657808434348d64 SHA-256: 5ef115d373fdf3dbcb76f4ee040393846c13707d99e2977909c62a591f3fbb1b
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains numerous embedded links, many of which point to a redirector URL (https://ttraff.com/pify?keyword=partition+piano+amelie+poulain+comptine+d+un+autre+%25C3%25A9t%25C3%25A9+pdf). The presence of a large number of PDF links suggests an attempt at SEO manipulation or a link farm, likely to facilitate phishing or distribute malware. The ML classifier also strongly indicated maliciousness.

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.com/pify?keyword=partition+piano+amelie+poulain+comptine+d+un+autre+%25C3%25A9t%25C3%25A9+pdf In PDF document text
    • http://files.larryssportsexchange.com/uploads/1/3/0/8/130874128/folerezome.pdfIn PDF document text
    • http://files.busylilbeefloral.com/uploads/1/3/0/7/130775249/f9e42a6650dfb7b.pdfIn PDF document text
    • http://files.saraayllon.eu/uploads/1/3/1/3/131380627/vuserebolitis.pdfIn PDF document text
    • http://files.tkcreations101.com/uploads/1/3/1/4/131437755/9268618.pdfIn PDF document text
    • http://files.mycolorpainting.com/uploads/1/3/0/8/130814594/dadobof.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/1/0429/6291/1391/files/zavedolaje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2299/1007/files/grant_cardone_closers_survival_guide_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5064/8223/files/famafip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2532/4439/files/cypher_x_hub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9121/2950/files/69151550842.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9906/0392/files/vojowidesegumekeko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1769/9477/files/96025705735.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0111/6833/files/zepilubanidunipijizu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7096/3350/files/46588159687.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2023/0564/files/falapuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5332/5215/files/james_stewart_calculus_6th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6271/4780/files/mesotelioma_peritoneal_maligno.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6572/1503/files/14477937350.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/40169505762.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008c02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C02 5264 bytes
SHA-256: e96bbd7dc970d8dcafdf491e0c252ef36abbdf938c7b97b9e66e77c5ad08cee2
font_01_sfnt_off00009d8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D8D 15088 bytes
SHA-256: 461aced2e04198d7ea676c14cf4eaec4f239af8809e0387ee7a18f4737ec63a4