Malicious PDF — malware analysis report

Static analysis result for SHA-256 2185a76bce213c94…

MALICIOUS

PDF

41.6 KB Created: 2020-08-23 01:55:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 9419cabef84ab5268f6a6691db985b5d SHA-1: 331c3e6a518e2c7e1f45b3a29564e44922a5fb64 SHA-256: 2185a76bce213c94d865c3cd987647d4e4cfa6d0dff747c5e953bc421033f5ad
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 'https://ttraff.cc/pify?keyword=ielts+semi+formal+letter+sample'. Additionally, it exhibits characteristics of a PDF link farm, with numerous links to external PDFs, including one hosted on cdn.shopify.com. The document body contains obfuscated text and the malicious URL, suggesting a lure to external content.

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=ielts+semi+formal+letter+sample In PDF document text
    • http://lupopam.mclennancostume.com/uploads/1/3/0/8/130814295/2b046ccd85db8f5.pdfIn PDF document text
    • http://files.beurownreligion.com/uploads/1/3/1/6/131636995/d5bd90a1f9c9a91.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/1/0427/7954/1671/files/bujivurumijepututigupobib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7235/6509/files/authorization_letter_word_format.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2853/7753/files/62254484663.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2720/2205/files/14749341242.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3493/3398/files/dukukodigajaletunibuxija.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5287/5424/files/73553749778.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3215/8116/files/comment_apprendre_a_lire_l_arabe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0297/7700/files/89087188928.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5721/7693/files/30604380978.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0459/2012/5079/files/answerable_over_definition.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 2

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_off000065e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65E2 4984 bytes
SHA-256: 576f070528ca416bfa8eb78c2c3cf09b3d411735cb02e7e47a9711b74a91d1eb
font_01_sfnt_off000076bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76BB 10224 bytes
SHA-256: 5b36526b99204035c0e11bc662b08df69c6fae292da9a6789fc790cb55a604f9

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