Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c15cfbb7f4432c7…

MALICIOUS

PDF

41.8 KB Created: 2020-08-20 18:25:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5076bde014432e21c3007d2b9f4d84ef SHA-1: 4e03f90f411bd5a618001ddf3e567f10fe85e395 SHA-256: 3c15cfbb7f4432c78f0fd2e6c17d2021e1cb7449667e86e2719b7181b6a58cde
222 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.cc'. The document body also contains this URL, presented as a call-to-action button. Additionally, a heuristic indicates a PDF link farm, with many links pointing to Shopify domains, but the primary redirector is the most concerning. The presence of a callback lure suggests a potential phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 7

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=custom+carbonless+order+forms In PDF document text
    • http://files.jaynardiscounts.com/uploads/1/3/1/8/131856212/zijip-rusef-xutinu.pdfIn PDF document text
    • http://files.mscommunicationassociation.com/uploads/1/3/0/7/130738970/wojuse.pdfIn PDF document text
    • http://files.lillieslion.com/uploads/1/3/2/7/132740873/jufadamu.pdfIn PDF document text
    • http://files.alexhoyleart.com/uploads/1/3/2/6/132681443/lenuwopevedanaxinuj.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/1/0430/3483/7149/files/3835499403.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4796/0232/files/bootcamp_for_mac.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7249/4495/files/fajisagisor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3493/3408/files/multilayer_blown_film_extrusion_process.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4256/1433/files/54333155374.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9664/3486/files/lemawabofejuwiwoxitanelu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3534/4539/files/90006207237.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8039/3639/files/inorganic_chemistry_full_notes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1669/1612/files/28789278027.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4856/6938/files/16569005742.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4381/4560/files/20997750758.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000065e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65E6 5212 bytes
SHA-256: 583ee99fecf6677ab903fe24332499a87cda1c359de2286a250e4a387d00679d
font_01_sfnt_off00007781.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7781 10316 bytes
SHA-256: 088b1312c11ebbb69305816294e82e6815c3cb4f8d4d302961af979e9e2366b1