Malicious PDF — malware analysis report

Static analysis result for SHA-256 33ccc12fcefc2dbe…

MALICIOUS

PDF

45.0 KB Created: 2020-11-03 17:29:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e83379095afc60102503ba802887623e SHA-1: 19ce7885300549c405a35017cde4589e93e233ef SHA-256: 33ccc12fcefc2dbe393ccfcb6f825de1396ad84c33440d4733163eebdb5b7530
154 Risk Score

Malware Insights

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

This PDF document contains numerous links to external resources, including a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://gettraff.ru/strik?keyword=goldsmith+leveling+guide+ffxiv', suggesting a lure to a malicious site. The presence of many links and the ML classifier's high confidence indicate a malicious intent, likely for phishing or malware distribution.

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://gettraff.ru/strik?keyword=goldsmith+leveling+guide+ffxiv
    • https://bolififona.weebly.com/uploads/1/3/4/3/134316640/aa98028d442d2e9.pdf
    • https://cdn-cms.f-static.net/uploads/4375698/normal_5f9db0771bc4a.pdf
    • https://zawiferodabubap.weebly.com/uploads/1/3/4/4/134447725/fewujixi.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/074c9ce5-b466-4c04-8366-098ea7810cac/pilewomib.pdf
    • https://cdn.shopify.com/s/files/1/0436/5670/8254/files/bidazoridirinodetufabaxu.pdf
    • https://uploads.strikinglycdn.com/files/2c0db8ef-61ed-4f6f-85ec-73bce1715cce/nopaborebekula.pdf
    • https://s3.amazonaws.com/zarelusipofox/filthy_frank_dead_rats.pdf
    • https://s3.amazonaws.com/dobesogum/54591680889.pdf
    • https://s3.amazonaws.com/juvuraguvutoxif/carson_dellosa_math_answer_sheet.pdf
    • https://uploads.strikinglycdn.com/files/b29f99da-076c-47f2-afe1-6d31a5b30266/dinet.pdf
    • https://s3.amazonaws.com/xajowu/xafetegezi.pdf
    • https://s3.amazonaws.com/zesotat/newington_public_schools_contract.pdf
    • https://uploads.strikinglycdn.com/files/727cdc3a-e149-4d10-a9c7-69f29208da52/apartheid_in_south_africa_1948_1990_worksheet.pdf
    • https://s3.amazonaws.com/leteraxewe/attached_amir_levine.pdf
    • https://uploads.strikinglycdn.com/files/b23852cf-3a90-481f-844f-9883066f4052/wugovogejolom.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_off00007249.bin
3ef410df425202f7d8709e2ab1f9620e8c4602e8bddc3ad42cdfed1a24568b87
pdf-font-stream PDF embedded font (sfnt) at offset 0x7249 5172 bytes
font_01_sfnt_off000083d4.bin
3f86bd25c4aabf1da9c913faf5d9f4a85f2fa806b6d50fafe0f01af8f1edade6
pdf-font-stream PDF embedded font (sfnt) at offset 0x83D4 10332 bytes