Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e186815259abbbf…

MALICIOUS

PDF

35.0 KB Created: 2020-09-05 02:54:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 29e968a21132a0ba17de0ca8cee0029c SHA-1: 6331861f13c22ecc8f522071e4347752e7bd3b8e SHA-256: 0e186815259abbbfc9f4d88b0327cb0b8c52fd3aa8ede22bbf66f558b9f461d2
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm designed for SEO manipulation. One prominent link, 'https://ttraff.club/wix?keyword=game+burnout+pc+ringan', is flagged as a malicious redirector. The document body, though heavily obfuscated, contains this URL and other Shopify links, suggesting a phishing or scam attempt to drive traffic to malicious sites.

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.club/wix?keyword=game+burnout+pc+ringan
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0427/4615/1078/files/diluxaremibupubazemi.pdf
    • https://cdn.shopify.com/s/files/1/0438/0144/4512/files/grammar_games_and_activities_penguin.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/4077026649.pdf
    • https://cdn.shopify.com/s/files/1/0434/6046/0701/files/3753487628.pdf
    • https://cdn.shopify.com/s/files/1/0433/0792/5654/files/jutuk.pdf
    • https://static.usrfiles.com/ugd/3826db_bb3f5ffb017c40d894e99eb3cefa51a2.pdf
    • https://static.usrfiles.com/ugd/4b68be_a10b81f81b8748da90275e25bd826105.pdf
    • https://static.usrfiles.com/ugd/74e905_142c88a6fbd54ea8939168dfa2a9df3c.pdf
    • https://static.usrfiles.com/ugd/9219f8_75061474eea9489684d5a71fefba52fc.pdf
    • https://static.usrfiles.com/ugd/2072cd_b240eb9062564efbafaf74301f25c4bd.pdf
    • https://cdn.shopify.com/s/files/1/0436/9691/4600/files/vazifasemelizoze.pdf
    • https://cdn.shopify.com/s/files/1/0434/5384/1560/files/94147663535.pdf
    • https://cdn.shopify.com/s/files/1/0437/2011/4331/files/99464395126.pdf
    • https://cdn.shopify.com/s/files/1/0429/9754/7157/files/67033050615.pdf
    • https://static.usrfiles.com/ugd/868b90_8f494653ef36475284bb6f5f3fbac2ea.pdf
    • https://static.usrfiles.com/ugd/f91cf1_e027195bd9394173b16c977bdfaf5045.pdf
    • https://static.usrfiles.com/ugd/9f69bd_644fa316027e43fa93d6a5ecb09dcd26.pdf
    • https://static.usrfiles.com/ugd/79cb75_aebcc87705ff4d9ca697a2c5bd3f84bd.pdf
    • https://static.usrfiles.com/ugd/01e791_8ef0cafa3d1c459b968bf6514546b819.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_off00004d8c.bin
eac2677d7a41b4abeb9aa3c1dd7bf9e6a669139d0b58f107f0353b3b33e1b32d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4D8C 5212 bytes
font_01_sfnt_off00005f34.bin
d2dab32cc2cb69ae14551a0fc9d1c8e4538c47e4c05de05377975fe0b9a33f88		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F34 9400 bytes

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