Malicious PDF — malware analysis report

Static analysis result for SHA-256 09a9a496441bacb8…

MALICIOUS

PDF

55.4 KB Created: 2020-08-30 20:31:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 48709791332fbf75184e84d10aca3863 SHA-1: dd44c64130c1a5db9db7ce895eaae5c250dc1dc9 SHA-256: 09a9a496441bacb80ffbbd0eef48de606e6fe47f427373e9b4a5198826fa8f4a
154 Risk Score

Malware Insights

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

The PDF contains embedded links, one of which, 'https://ttraff.com/wix?keyword=holiday+store+hours+template', is flagged as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'Holiday store hours template' and the malicious URL, suggesting a phishing or scam attempt. The presence of numerous external PDF links, many pointing to benign content, indicates a link farm strategy, likely to obscure the malicious redirector.

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=holiday+store+hours+template
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/b8c837_f303b18b54a047ce8b31f22858190580.pdf
    • https://static.usrfiles.com/ugd/8b2c09_1e68729c5ca24c7ca2db94586d454190.pdf
    • https://static.usrfiles.com/ugd/2f8cea_de558fafb758402baf13d11a3b34c3fc.pdf
    • https://static.usrfiles.com/ugd/87a178_9278718d9e584d288718aa75e88184d5.pdf
    • https://cdn.shopify.com/s/files/1/0431/1705/2053/files/besinger_score.pdf
    • https://cdn.shopify.com/s/files/1/0434/8339/8310/files/ashok_leyland_bus_mod_apk.pdf
    • https://cdn.shopify.com/s/files/1/0433/1733/0075/files/kowedamok.pdf
    • https://cdn.shopify.com/s/files/1/0433/8774/8519/files/amendments_1_10.pdf
    • https://cdn.shopify.com/s/files/1/0437/0127/2729/files/bivasujiloxunexededevolaj.pdf
    • https://static.usrfiles.com/ugd/b8c837_d338ef3bfea54650b258c3a3c51d4b70.pdf
    • https://static.usrfiles.com/ugd/e42ee3_ff244eca7b564cbcb6f522acfa7a6963.pdf
    • https://static.usrfiles.com/ugd/82e28d_2a64b992eefe44788d41ac9d82c53915.pdf
    • https://static.usrfiles.com/ugd/ca300b_eff38f685c4f4687a78fa9c12146576f.pdf
    • https://static.usrfiles.com/ugd/7603ae_2753e68fdb7c4ee9871efb3cefb49283.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_off00009298.bin
025437ffdd998cf1634573dfa21eabf9341b038e785e9b32637e85c2a02f14a6
pdf-font-stream PDF embedded font (sfnt) at offset 0x9298 5260 bytes
font_01_sfnt_off0000a455.bin
b69ae3b619bda4c4b005d2cbc2970c9bcc5ba0e210648862f3b45ae702241faa
pdf-font-stream PDF embedded font (sfnt) at offset 0xA455 13996 bytes