Malicious PDF — malware analysis report

Static analysis result for SHA-256 c427bdf619b11fc9…

MALICIOUS

PDF

50.7 KB Created: 2020-07-26 11:18:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3389bf6b089b0c586af0df6ab37516c9 SHA-1: b7a013b35aa48954a09009361c5d4a68b791de39 SHA-256: c427bdf619b11fc99b16f7a1c3128faed612ca9242d5759b6acffbb8bcfa083d
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on 'cdn.shopify.com'. The document body, though heavily obfuscated, contains text related to 'Bengali new song' and metadata indicating it was generated by wkhtmltopdf, suggesting a lure to entice clicks on the malicious redirector. No scripts were extracted, but the primary attack vector appears to be social engineering via malicious 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=bengali+new+song In PDF document text
    • http://files.karaikudivoyage.us/uploads/1/3/1/3/131381374/8942354.pdfIn PDF document text
    • http://files.global4xloan.com/uploads/1/3/1/3/131379971/muzefatekulorig_puvolikozates_gefagarazosex_zulawovetij.pdfIn PDF document text
    • http://files.dakotatrackfield.com/uploads/1/3/1/6/131637723/af85e6ae23a.pdfIn PDF document text
    • http://files.ebast.net/uploads/1/3/1/4/131410094/gifugukejafu.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/1/0433/0687/7080/files/25322908130.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0736/0667/files/98397940804.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7547/7405/files/mifirunepoluto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1378/3203/files/ganugujunojiwixesumuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/35679391278.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9769/4109/files/56514495806.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/65788935473.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1339/7924/files/wakegadalitenat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3970/9589/files/wavudefo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6006/0567/files/xivemokazinu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5313/7576/files/wigerusalikarifori.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5206/3125/files/dezuditavon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5880/7455/files/41299344685.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_off00008117.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8117 4608 bytes
SHA-256: fb2f601bbce81470988c2e3f5848e8ea0039997928178023c5ba86eb426a959f
font_01_sfnt_off000090d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90D4 14524 bytes
SHA-256: a5e2701857bf405f47e9b7ac16c157e6c7034afe2863fe1bf6cdc07a767a12a7

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