Malicious PDF — malware analysis report

Static analysis result for SHA-256 d824f9aada63cac1…

MALICIOUS

PDF

34.2 KB Created: 2020-08-06 04:07:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 9128e423767bb2bfdb156d8c701f1d86 SHA-1: 860ce239bd6f239fbf018fbdfaef648a145c19b9 SHA-256: d824f9aada63cac1e6f37b31f60763ec958309bc656fedfd2167817a15f610d3
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.cc/pify?keyword=basic+tactics+for+listening+third+edition+student+book+pdf'. This URL is presented within the document body, disguised as a book title, to trick users into downloading further malicious content. The PDF also exhibits characteristics of a link farm, with numerous external links, many of which point to Shopify domains hosting other PDFs. The primary malicious IOC is the ttraff.cc redirector.

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.cc/pify?keyword=basic+tactics+for+listening+third+edition+student+book+pdf In PDF document text
    • http://milozup.dartendistrict.com/uploads/1/3/0/7/130775735/a533a344115d.pdfIn PDF document text
    • http://files.honorcarvings.com/uploads/1/3/1/4/131407227/9d73c5.pdfIn PDF document text
    • http://files.holbrooktriathlon.com/uploads/1/3/1/1/131164520/6209290.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/1/0432/5149/9170/files/nepotobemejanegepunoduv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4741/1096/files/33006478920.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5165/6102/files/28952316684.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tedogunugovosilogupex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1382/4927/files/3858582798.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2378/5370/files/zafajunurileroxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/3486/4798/files/managerial_accounting_for_managers_3rd_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0487/9267/files/tijiwijotuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0020/7272/files/zunetodirozu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2329/3864/files/jofozikixobevewo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4640/2213/files/3944957441.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0644/3176/files/32384018828.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8134/3900/files/89706100392.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5651/2676/files/jamiraxiwirezefazamajebe.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 3

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_off0000470b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x470B 5672 bytes
SHA-256: c17ede6a25adbb4fb5128cf73372047732d4c5feb3c3e2380a0f5aecb122f820
font_01_sfnt_off00005a47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A47 9756 bytes
SHA-256: 4ed1ce6718aca3c373b7f1b4073dfeaa78b792144787e184e0fe4539d0d158ad

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