Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d1213c88f9dba13…

MALICIOUS

PDF

46.4 KB Created: 2020-08-15 17:23:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3f28bc5d6ce4d016b16eb5eff953269f SHA-1: 3924e4e379b23f6e258663128508830ef3fb0df5 SHA-256: 4d1213c88f9dba138feed6e2bf20e4d574dbb3d03e3c72d42486500c40b6436c
202 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link pointing to ttraff.com, which is flagged as malicious. The document body, though heavily obfuscated, contains text related to 'Zamzar pdf to jpg conversion tool' and a call-to-action phrase, suggesting a lure to trick users into clicking the malicious link. The presence of numerous embedded links, many pointing to Shopify, further supports a link farm or SEO poisoning tactic to distribute the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • 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.com/wb?keyword=zamzar%20pdf%20to%20jpg%20conversion%20tool In PDF document text
    • http://files.girlsstem.ca/uploads/1/3/2/7/132740362/6956714.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/1/0431/7272/4900/files/wordly_wise_book_6_lesson_10.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7813/0593/files/18033572702.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2936/4885/files/causes_of_major_depression.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8166/2628/files/56088264693.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0611/6511/files/pavuluguv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0718/8898/files/bunamujamo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9494/1603/files/lapekuxosugodijipijegale.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5265/5002/files/jutupez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6761/3087/files/37932197689.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0956/3045/files/fet_biasing_techniques.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8772/4704/files/rolofomogizezil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7111/1330/files/48834716736.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000618f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x618F 5616 bytes
SHA-256: f383f7ff9fa3a6854c7c90b452313e32c9d260a745651be0ccf56759991b3b8a
font_01_sfnt_off000074b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74B2 10184 bytes
SHA-256: cc837556d37c1cbac4e5d829dee8f48a08c2b93a2f65b2b32909263496e36c57
font_02_sfnt_off000097d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x97D3 16076 bytes
SHA-256: f283a563ee48c68d0f210b91d059b93f2da97875a4894e08c15e1f8ed5b97a7d

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