Malicious PDF — malware analysis report

Static analysis result for SHA-256 c97e13d37a59fd1e…

MALICIOUS

PDF

42.1 KB Created: 2020-08-09 07:27:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9b814e29217e2f1d44b5dc663909bb8f SHA-1: d7f64b53bd6d3cac518833ff5e71c50bf80f85c1 SHA-256: c97e13d37a59fd1ef3894af3f8c387aebd85e8a7f4d8013eef73895339487576
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.ru/pify?keyword=carer+allowance+form+pdf+australia'. This URL is presented within the document body, disguised as a legitimate form. The PDF also exhibits characteristics of a link farm, embedding numerous external links, many of which are hosted on Shopify. The ML classifier strongly flagged this PDF as malicious. The primary attack pattern involves luring the user to a malicious site via a deceptive link.

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=carer+allowance+form+pdf+australia In PDF document text
    • http://files.victoria13gla.ca/uploads/1/3/0/7/130776060/rutedigasefo_ripekinal.pdfIn PDF document text
    • http://files.top50pikeseries.ca/uploads/1/3/0/8/130814535/niwivarogo.pdfIn PDF document text
    • http://files.behavioralconsultingservices.com/uploads/1/3/2/8/132814322/477a54782bcc1c7.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/1/0441/4029/8392/files/amsterdam_transportation_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/32177526878.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6454/0827/files/86703951773.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7730/2427/files/1450573563.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8800/2710/files/coast_guard_awards_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4931/2666/files/63395832185.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7233/1675/files/gefasapupufup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1610/0776/files/30146238535.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3993/2064/files/zenufolukepazaxa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4498/6280/files/nodufidoteger.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5068/6874/files/dota_2_dark_moon_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3517/1738/files/rutherford_backscattering_spectrometry.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2590/8383/files/boxuvuxalotos.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_off00006595.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6595 5296 bytes
SHA-256: 5fe370883dff3914d24eab5fb50728d5b53dcb4c5b1763fa701268593ee47991
font_01_sfnt_off00007797.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7797 10500 bytes
SHA-256: f7d75f981050e653501bbb019df0c38afcd3ecdc12045429a4014d12eb6726c9

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