Malicious PDF — malware analysis report

Static analysis result for SHA-256 a3e1a921b1be611f…

MALICIOUS

PDF

41.4 KB Created: 2020-08-21 01:44:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a85bb3b012da820bc2e8cdf6d6458404 SHA-1: 57075ffa6d1f2b2b5a6f185e3bb42fc5b3078f2d SHA-256: a3e1a921b1be611fb2007f7f0940b727531ede38403d4386a5524fd8ebd4af2b
194 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which point to external PDF files hosted on Shopify. One critical heuristic firing indicates a malicious redirector link, specifically 'https://ttraff.cc/pify?keyword=agriculture+tax+exempt+form+florida'. This suggests the document is designed to lure users into clicking malicious links, likely leading to further compromise. The presence of numerous external links also aligns with SEO poisoning tactics to increase visibility.

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=agriculture+tax+exempt+form+florida In PDF document text
    • http://files.tonyquattroville.com.au/uploads/1/3/0/7/130776611/likugosatelimopikar.pdfIn PDF document text
    • http://judojun.basiccomputertutoring.com/uploads/1/3/1/3/131398455/tukawuzepomon_tobawozenobe_daneleg.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/1/0434/7192/9496/files/75782142016.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2371/1903/files/vezajafadokaxofit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7415/0809/files/foxtel_go_android_app.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4044/6366/files/ischemic_heart_disease_guidelines.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8704/4510/files/kokalevaritetobavezi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5281/0911/files/besebotulabedo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6152/6166/files/fukubizatof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0441/8458/files/basic_spoken_english.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/2325/6999/files/73283836105.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 1

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_off00005b67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B67 5356 bytes
SHA-256: 7d1e37102f934e4b6cbac4bf1e9f64125c05b3b6cda0dbe8d91ebd67e58cb1d3
font_01_sfnt_off00006d8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D8B 13904 bytes
SHA-256: 603c70b458a7bbf766426733881ba76098302829bd517cbbc0d6483f0ffceb62

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