Malicious PDF — malware analysis report

Static analysis result for SHA-256 07b9097f68076b86…

MALICIOUS

PDF

49.8 KB Created: 2020-08-29 03:32:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 22728897e48c05a8fa096b5f141e206c SHA-1: b7b0dade8269dfc220051e10d2e00cee33795fac SHA-256: 07b9097f68076b86a071c11d49aa4f8968f3cfcfd2e30082c04860311d911b47
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link to a known malicious redirector, ttraff.com, which is disguised as a game walkthrough. The document also functions as a link farm, containing numerous links to other PDFs, likely for SEO manipulation or to distribute further malicious content. The ML classifier strongly indicates maliciousness, and the overall structure suggests a phishing or redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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/wix?keyword=kindergarten+game+walkthrough
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/b8c837_98530b8ca05547a48c03e4009db7ffc4.pdf
    • https://static.usrfiles.com/ugd/b8c837_742f67efcec24757a8a14ef10945a063.pdf
    • https://static.usrfiles.com/ugd/b8c837_3b8b994bfbaf4669bd8201a54318016d.pdf
    • https://static.usrfiles.com/ugd/b8c837_909093583bfc4f7880e0198000c6c45a.pdf
    • https://static.usrfiles.com/ugd/b8c837_29b7b00f22784d17b0900dcefed3238d.pdf
    • https://static.usrfiles.com/ugd/b8c837_409c019efa9f4aa28a7a617c0d06b294.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nujogopuju.pdf
    • https://cdn.shopify.com/s/files/1/0431/4293/8784/files/corporate_award_ppt_template.pdf
    • https://cdn.shopify.com/s/files/1/0428/5369/5647/files/46887393517.pdf
    • https://cdn.shopify.com/s/files/1/0433/3453/3275/files/jubimitazediloke.pdf
    • https://cdn.shopify.com/s/files/1/0432/4586/3067/files/magazine_design_sample.pdf
    • https://cdn.shopify.com/s/files/1/0429/2391/7478/files/71483324710.pdf
    • https://cdn.shopify.com/s/files/1/0431/9979/1265/files/kabegeselazumapeb.pdf
    • https://cdn.shopify.com/s/files/1/0429/8414/5049/files/kepade.pdf
    • https://cdn.shopify.com/s/files/1/0432/3957/1611/files/mideb.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000839b.bin
238ca614853f35f03a64d3c8a0103536a4cb13dc9ab8eeb777f30c0952f874f2
pdf-font-stream PDF embedded font (sfnt) at offset 0x839B 5184 bytes
font_01_sfnt_off00009515.bin
0508ecb969a58097e6312de0a2c4de30b018bd9ff0b8480a27604b55ec1179c8
pdf-font-stream PDF embedded font (sfnt) at offset 0x9515 10820 bytes