Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a459c8e07f68f4e…

MALICIOUS

PDF

69.1 KB Created: 2020-08-30 10:18:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 01fedee8fc4e8eab42a2f211fcc6a2a8 SHA-1: 24a3de7e58a6ec02c6b02b365bd65634b7fe18f1 SHA-256: 0a459c8e07f68f4ea0e398e27bcff148d18af88dbf85bd69fc30e3a1b9875cc5
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. It also exhibits characteristics of a PDF link farm, with numerous external links, many of which are benign but one points to the identified malicious redirector. The document body, though heavily obfuscated, contains the malicious URL, suggesting an attempt to disguise the malicious link within seemingly legitimate content.

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=suzuki+raider+150+manual+pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/585b1d_80f6c70c06934d67854b7cbcfddd2eca.pdf
    • https://static.usrfiles.com/ugd/b8c837_1704dd35a41148099ccebb10aa52a13f.pdf
    • https://static.usrfiles.com/ugd/67e251_eb8370e0a58645e59428e3269ccfef38.pdf
    • https://static.usrfiles.com/ugd/4826f5_f86f50464792476ea9a239b11a325c57.pdf
    • https://static.usrfiles.com/ugd/9ff9b8_86bd3b476ea14b3daf775816cd3492a8.pdf
    • https://static.usrfiles.com/ugd/3fc21f_5380767951644bbd835034a9d1c3e0e8.pdf
    • https://cdn.shopify.com/s/files/1/0432/8695/4140/files/botulismo_alimentario.pdf
    • https://cdn.shopify.com/s/files/1/0431/6561/4234/files/donobotu.pdf
    • https://cdn.shopify.com/s/files/1/0434/9313/0390/files/xipiwuxalidubugefara.pdf
    • https://cdn.shopify.com/s/files/1/0430/7910/6724/files/english_grammar_exercises_present_simple_and_continuous.pdf
    • https://cdn.shopify.com/s/files/1/0433/4590/3774/files/zefibilabitituw.pdf
    • https://cdn.shopify.com/s/files/1/0435/6728/4383/files/fezagegitukusaro.pdf
    • https://cdn.shopify.com/s/files/1/0432/8597/1110/files/167325233.pdf
    • https://cdn.shopify.com/s/files/1/0438/1143/8752/files/patezerexekidugovagi.pdf
    • https://cdn.shopify.com/s/files/1/0434/0819/5738/files/kivanafimatuboziriv.pdf
    • https://cdn.shopify.com/s/files/1/0434/5259/6374/files/reverse_mouse_scroll_windows_10.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_off0000ceab.bin
62a7d2eee7ecef55d5d620bbc9ec2b3033ff4bbf1fcf60bdca0ba0de46786196		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCEAB 5544 bytes
font_01_sfnt_off0000e183.bin
5a31eeac9b1e7bcadaaa4b2d4aedb90f5f2fcdd1b23eb4fe09db27f28829bc1d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE183 11004 bytes

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