Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ddc370d39a670f8…

MALICIOUS

PDF

45.1 KB Created: 2020-08-15 03:05:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e458874eaa6284331bc32b1ec2620397 SHA-1: 17f360890ecd7a8a7656a7ee7081758153e8e780 SHA-256: 1ddc370d39a670f89d034adf9f3ed0710da5b6e6cf0e0bfb07f26c1afb1a5e40
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one specifically pointing to a known malicious redirector (ttraff.cc). This redirector is designed to lure users to further malicious content, likely a phishing page or malware download. The presence of a link farm and the ML classifier's high confidence score further support the malicious nature of this document. The document body itself contains the malicious URL, suggesting a social engineering attempt to trick users into clicking it.

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=2019+calendar+printable+template+with+holidays In PDF document text
    • http://files.treasurlybydima.com/uploads/1/3/1/4/131483147/9f118c6711726.pdfIn PDF document text
    • http://wivuba.19th-light-dragoons.ca/uploads/1/3/1/1/131164531/nakoxajomagixemev.pdfIn PDF document text
    • http://dawir.alexandrasearle.com/uploads/1/3/0/7/130774993/1bac6a6f4.pdfIn PDF document text
    • http://files.poetryandmemory.com/uploads/1/3/1/0/131069824/3888713.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/1/0428/9835/8432/files/13139855908.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9128/7461/files/17546298833.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0275/7281/files/13405830598.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9925/0072/files/39834181133.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6360/6429/files/21486180988.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8647/8489/files/2-_5_kancolle.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7188/9817/files/dietary_restrictions_codehs_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6052/7253/files/somekizezifuwaxot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0236/3045/files/99328318712.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8649/5396/files/74166854585.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 6

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_off0000700e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x700E 6032 bytes
SHA-256: 9bc2a88b3ac84357c7fe7441c685e93f887fc29eb6d481ca73e635f7e6c170d9
font_01_sfnt_off00008467.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8467 10088 bytes
SHA-256: f3bf7acb6fb133df34458a8bc3a2459c225565d7dad3da7d67b0b0ca6529d9cc

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