Malicious PDF — malware analysis report

Static analysis result for SHA-256 f997c21fb79c41a6…

MALICIOUS

PDF

43.9 KB Created: 2020-08-05 16:13:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 017109099ce5d890e6320dd4cf23e238 SHA-1: a999932d8fed2c7b0ebec95acbfa67edde7c36e6 SHA-256: f997c21fb79c41a6f5c07c4610b00f5f0548cce5480e0ce290378eb8ae1e9f21
194 Risk Score

Malware Insights

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

The PDF contains a high density of external links, many pointing to shopify.com domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=medicare+part+b+fee+schedule+2020+pdf', which is flagged as malicious. This suggests the PDF is designed to redirect users to malicious content, likely for phishing or malware distribution.

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=medicare+part+b+fee+schedule+2020+pdf In PDF document text
    • http://files.biohealthworksinstitute.com/uploads/1/3/1/3/131383838/f1fc68331.pdfIn PDF document text
    • http://files.vpsareunion.com/uploads/1/3/2/6/132695747/xojot.pdfIn PDF document text
    • http://files.camera1.ca/uploads/1/3/1/3/131380413/pizixejawij.pdfIn PDF document text
    • http://files.snapzphotobooth.co.uk/uploads/1/3/0/7/130740262/domosepele_surib.pdfIn PDF document text
    • http://files.heartlandchurchnetwork.com/uploads/1/3/2/6/132695639/mepototipoxi.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/1/0436/7931/8166/files/29149155231.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8592/9375/files/fomunazagirerizedobijefif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0531/2156/files/encyclopedia_of_mathematics_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5762/6792/files/50230736662.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0438/5690/files/gotupaworebakojujadaraxek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0670/5311/files/vilepobew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8022/9791/files/nutafusaligiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7156/9046/files/jurizadinawawexukixepur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7333/8533/files/safedumorimuruxikukezite.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xakikalimakimoxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2685/8662/files/fefatijelumofipojon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1678/9927/files/23897280645.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_off00006c43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C43 5664 bytes
SHA-256: 08eb33e2edddb463056d957024c0d2aafe2ed5c24f4fd9c70e85eb4f342dfdd2
font_01_sfnt_off00007f83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F83 10144 bytes
SHA-256: 6376ec6b205eadaa0b316a0a8abe0756065b3e44837c8779d1ba7e5aa11d2ddc

Open this report in the interactive analyzer, or submit your own file for analysis.