Malicious PDF — malware analysis report

Static analysis result for SHA-256 1fc72dfded867363…

MALICIOUS

PDF

48.4 KB Created: 2020-08-15 01:19:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cd0c9d8f3bbb83898eb8f747106a68c4 SHA-1: 5dbc071db33253b180b4d4751c038f016ced028d SHA-256: 1fc72dfded86736342a7e22cbf7ab85c0629e12626b0703e050fa8386c9ef8c7
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits a PDF link farm with numerous external links, many hosted on Shopify, suggesting an attempt to broaden reach or obscure the malicious destination. The ML classifier also strongly indicated maliciousness. The primary attack pattern involves directing users to malicious infrastructure via embedded links.

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.com/pify?keyword=pearson+correlation+reporting In PDF document text
    • http://files.ahacentre.ca/uploads/1/3/0/7/130739786/fb967b.pdfIn PDF document text
    • http://files.creatingrounds.com/uploads/1/3/0/7/130776276/jowemu.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/1/0435/6525/2771/files/accounting_information_systems_romney.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2228/5976/files/turomurejirafopokukidip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9037/8901/files/paxumoxezuxerilegikuvav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1705/1048/files/bomajexujapevilebuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5052/3031/files/revapasela.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7719/8229/files/64489016124.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0441/8455/files/misusubeguwidadufip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5601/9109/files/galoliwebod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/2993/3725/files/dieta_cetogenica_alimentos_permitidos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2135/3635/files/bergey_s_manual_of_systematic_bacteriology_9th_edition_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5116/2523/files/life_cycle_of_cestodes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1779/7785/files/86727950767.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 5

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_off00007919.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7919 5100 bytes
SHA-256: 928df4c2d0401f063c0cf32a5c83bebc94caf263146ff8c70cb4ab429574b639
font_01_sfnt_off00008a81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A81 13680 bytes
SHA-256: 0ff536c6e6b7495c54d62bcc1b1e2270fb49a8b1d0c9e377be76fcf79efc0b94

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