Malicious PDF — malware analysis report

Static analysis result for SHA-256 e25186945c077dac…

MALICIOUS

PDF

44.1 KB Created: 2020-08-04 06:43:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 605195be88ec818f0c45e75ab51e2aa2 SHA-1: 8dfb55964a972c12b7ec3c0dcc03d517045c5db8 SHA-256: e25186945c077dac330cdace7f08db9d27118ac45a3cf57e6e7f6953fca0864f
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains text fragments suggesting a lure related to 'English grammar pdf 2'. The presence of numerous external PDF links, many hosted on Shopify, indicates a link farm designed to obscure the ultimate destination. The primary malicious IOC is the redirector URL, which likely serves to deliver a secondary payload.

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=english+grammar+pdf+2 In PDF document text
    • http://files.canadianclubedmonton.com/uploads/1/3/0/7/130739678/wobaki-xunaxo-zuxido.pdfIn PDF document text
    • http://files.kingdomhvac.org/uploads/1/3/1/1/131163632/7270828.pdfIn PDF document text
    • http://files.julianjrobinson.com/uploads/1/3/0/7/130775645/tisogedutozux-radesitosepobud-voxuzag.pdfIn PDF document text
    • http://files.journeystoflavors.com/uploads/1/3/0/9/130969555/a18860d033.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/1/0437/5255/4657/files/tapujiku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7334/6465/files/tujewiva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1437/9930/files/movukudimezovukuli.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7235/6509/files/dalurutapesufamisarures.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1264/4251/files/polinaponimujibidana.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6775/8997/files/wg111_v3_drivers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7581/9927/files/inter_tel_phones_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8371/7015/files/49563287245.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4796/0232/files/cen_rrc_01_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4192/2982/files/99346974260.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4617/4877/files/fokivumepadaxipado.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8491/3565/files/73007191685.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_off00006ddf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DDF 5544 bytes
SHA-256: 3c66eccd75bd4504c06c16bd6829787ce9f489bfdf9e470c12ac39b279fdd370
font_01_sfnt_off00008099.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8099 10292 bytes
SHA-256: 17362937be53f4a4dc9ef6b57bf9780207306a96813292628050ff3030427e0f

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