Malicious PDF — malware analysis report

Static analysis result for SHA-256 cdaa35071f06fbe4…

MALICIOUS

PDF

45.8 KB Created: 2020-08-07 00:59:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 585abf66a712cad9229bbbb9901a8197 SHA-1: 75b644817f1e49cb7212634021bcdde27dcdd1ab SHA-256: cdaa35071f06fbe4ade657c69116ba0378ac4f85bfb5479ed9dda5691fa2cffd
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector at ttraff.com. The document body, though malformed, contains text suggesting a lure related to "needle bearing size chart pdf", which aligns with the redirector's keyword. The primary attack pattern involves tricking users into clicking a link that leads to malicious infrastructure.

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=needle+bearing+size+chart+pdf In PDF document text
    • http://files.mistymacal.com/uploads/1/3/2/6/132681882/07276467920f3.pdfIn PDF document text
    • http://files.heatherannette.com/uploads/1/3/1/0/131070611/xazujun_buxunup_xabuzawuses.pdfIn PDF document text
    • http://files.8citiesnb.com/uploads/1/3/1/4/131437976/de5ada89.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/1/0440/8773/8533/files/58554041832.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9434/3841/files/ligelitakiposoteno.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6704/0154/files/50943595773.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6217/3602/files/buxexuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4190/5057/files/professional_qualities_of_a_good_teacher.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6793/9743/files/chapter_33_apush.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8620/9439/files/36514107916.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3887/4532/files/curtis_air_compressor_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3712/0933/files/95719173718.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6265/6157/files/91696031586.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0151/2090/files/35762278962.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 7

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_off00005c12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C12 5576 bytes
SHA-256: 19fd8482145107aa6923ddd83d4bf09508f49f313856e236b3623838fda280e6
font_01_sfnt_off00006f0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F0F 9572 bytes
SHA-256: a59dc132b850d840f897656f65f4165c65dc6be327056ca15a9cfae4f6f58a17
font_02_sfnt_off0000901f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x901F 17672 bytes
SHA-256: 3a4638eecdb49a75d59dd3a6d9342f5cf136124eef043efc901be77837571066

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