Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c1621fe20363bee…

MALICIOUS

PDF

52.4 KB Created: 2020-07-29 15:13:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 520f86179c4178d67d6fcde7104e468c SHA-1: afb4c356c96625759780289b4e165a085b4637d4 SHA-256: 2c1621fe20363beea1757a975aca25b0e8c8d43111f957f048aa4cacb3fcf0e6
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded URLs, with a critical heuristic firing indicating a malicious redirector link to 'ttraff.com'. Another critical heuristic identified a PDF link farm, with numerous links pointing to Shopify domains. The document body is largely unreadable binary data, but the presence of the redirector and link farm strongly suggests a malicious intent, likely for phishing or distributing further malware.

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=functional+dependency+and+normalization+pdf In PDF document text
    • http://files.thefineryboutique.com/uploads/1/3/0/7/130739457/xajuvowukuputuj_lodabob.pdfIn PDF document text
    • http://files.yumaeastlotowners.com/uploads/1/3/1/4/131438240/gutotadarifa.pdfIn PDF document text
    • http://files.mymollydoll.com/uploads/1/3/0/7/130775309/dosumadu_dijukazasuko_mubezanizi_lutog.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/1/0430/7661/6341/files/15972300499.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1610/0776/files/30146238535.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9564/5589/files/retebudar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3364/7525/files/78265082755.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3818/6392/files/riret.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9508/9561/files/27387963259.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7238/8249/files/fofovaliderosuxupir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6882/4488/files/84011627137.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/bobidaxida.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_off000088d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88D0 5112 bytes
SHA-256: 1e2e91f0633b38b364bb3ac5b821dbe0b2991636db679265603f587bf27e3942
font_01_sfnt_off00009a25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A25 13248 bytes
SHA-256: 31430a244980fb40516e9d1908214e2cfc2814c1847a2d03503ed0bf1c33a62a

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