Malicious PDF — malware analysis report

Static analysis result for SHA-256 035b97265c048a1d…

MALICIOUS

PDF

99.5 KB Created: 2020-09-13 07:40:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bd6d86d82dfcf14c2960bb04924bb970 SHA-1: c3d1d1991f49169c720af23c9d39ef65239c01c9 SHA-256: 035b97265c048a1d34f23bed7cfe126941448b7076db90eb5727965fcba93b24
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains heuristics indicating it is a malicious redirector and an advance-fee scam lure. It embeds numerous links, with the primary malicious link pointing to 'ttraff.ru'. The document body, though heavily obfuscated, contains the same malicious URL, suggesting the intent is to trick the user into visiting a scam website.

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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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.ru/wix?keyword=delta+sigma+theta+founders+in+order
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0481/2980/2403/files/54625243377.pdf
    • https://cdn.shopify.com/s/files/1/0433/8266/9464/files/loxuxexemezikesanosuw.pdf
    • https://cdn.shopify.com/s/files/1/0461/4776/4387/files/fevoduwoka.pdf
    • https://static.usrfiles.com/ugd/4b874d_10734836a52f4fd5ae52193368e9ac6f.pdf
    • https://static.usrfiles.com/ugd/faa7ef_01be16bef82945fa9bdf9f4e42d9772b.pdf
    • https://static.usrfiles.com/ugd/a6e5e9_dfdf87648bf4411d94e75fbdbfa0966a.pdf
    • https://static.usrfiles.com/ugd/8b9728_9416028f5171460bb04a60590eab674e.pdf
    • https://static.usrfiles.com/ugd/0bcf16_3e4fbe20400e4bb7967bcdbc0dc0ab4a.pdf
    • https://static.usrfiles.com/ugd/ca300b_9f4cd427a14c48c3a50a3fdd169960ab.pdf
    • https://static.usrfiles.com/ugd/a8ca0f_30a6103f349e4037a2d798db574e957f.pdf
    • https://static.usrfiles.com/ugd/19ce5d_9b186734b6d348fbbb7d5a3e7f70bbb1.pdf
    • https://static.usrfiles.com/ugd/7ad284_52d412ef355e4f9c9b599af89e4898a5.pdf
    • https://static.usrfiles.com/ugd/48d9a1_bbccd9e23b9043b788886c8aeebfdeb1.pdf
    • https://static.usrfiles.com/ugd/7e6083_474aa596ea9d4b349ccfd8ae2bef21dc.pdf
    • https://static.usrfiles.com/ugd/b8c837_1fd86df1d45b439bb0196b904063b124.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00013c08.bin
dc47e42defe8b3afdc977d35486582e5f687526f9a6ac2501a2099fb653faa7b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13C08 5204 bytes
font_01_sfnt_off00014d90.bin
35459b1258dca6981257559113454061250720476c8c8b405a9d799a33b77e55		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14D90 10864 bytes
font_02_sfnt_off00017277.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0x17277 4324 bytes

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