Malicious PDF — malware analysis report

Static analysis result for SHA-256 e80830c8441de056…

MALICIOUS

PDF

35.7 KB Created: 2020-08-04 22:49:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 78e780ac7acc2815e36ac3568f98acea SHA-1: 450447bab10a20d8cc680018978f3a990596a951 SHA-256: e80830c8441de0567ed8214df4f24d42b613859f2f3f5558deff7fbc4b297820
194 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to `https://ttraff.ru/pify?keyword=alter+ego+a2+pdf+gratuit+avec+cd+audio+mp3+gratuit`. The document body, though partially corrupted, contains text that appears to be a lure for free audio content, and the PDF also contains a link farm of 18 external PDF links, many hosted on Shopify. The primary malicious URL is likely used to redirect the user to a phishing or malware distribution site.

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=alter+ego+a2+pdf+gratuit+avec+cd+audio+mp3+gratuit In PDF document text
    • http://files.arvidsonconsulting.com/uploads/1/3/2/6/132683292/9193707.pdfIn PDF document text
    • http://files.localproduceguide.com.au/uploads/1/3/0/8/130874109/wawanudawasori.pdfIn PDF document text
    • http://files.majestytheseries.com/uploads/1/3/1/6/131607467/mujojopiri.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/1/0434/7228/9944/files/febavosutomisog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3885/0719/files/41313507666.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0517/4183/files/vitozukupinofepapikisudug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4065/2960/files/mogikesamubutotoma.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2790/6206/files/92142412541.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6125/6091/files/rovatodufutabelaxigikedux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9952/1181/files/91371944723.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7320/0537/files/59989222615.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3019/2039/files/mesep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9932/4580/files/vitowisigitipuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7783/5681/files/gozageguzuwuledatusopu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7807/4022/files/pifufozixeginixo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8145/0147/files/23416843941.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9199/3500/files/6732908083.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4398/6327/files/mosidobiporuwezane.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_off00004cad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4CAD 5644 bytes
SHA-256: 1c6a48ce37ea44a4c87e3217195d4ad55376a8989d7026054ccac0555a17abfc
font_01_sfnt_off00005fe1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FE1 9832 bytes
SHA-256: a92564556bc751d778487aac75d9dadb79a7efd07c184aa2e79c2b61a783601c