Malicious PDF — malware analysis report

Static analysis result for SHA-256 06ab2e8a82ecbee2…

MALICIOUS

PDF

42.5 KB Created: 2020-08-11 17:00:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d121e341d40a8548cd9ae5f2722807e3 SHA-1: 6713f7e9a69e5ba96289898221e036a1821afaca SHA-256: 06ab2e8a82ecbee26dd22e39b1fd862f39f9a2454fcf7917cac619c90b801e60
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, which is likely used to obscure the final destination of the malicious payload. The document body, though heavily obfuscated, contains the same URL and appears to be a lure related to Indonesian history to entice users to click the link. The presence of numerous other PDF links suggests a link farm or SEO poisoning tactic to distribute the malicious 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.cc/pify?keyword=masuknya+agama+hindu+budha+di+indonesia+pdf
    • http://files.fauquierhshort.com/uploads/1/3/1/3/131382470/guronarogi-gujewage-jabatogabarim-gepinobab.pdf
    • http://files.dwolf.eu/uploads/1/3/1/8/131858045/kamekedab.pdf
    • http://xoloju.hunterwrestling.com/uploads/1/3/0/8/130874493/rodobiwapesuxu.pdf
    • http://junepijed.marinerscoveneighborhood.com/uploads/1/3/1/6/131606617/5cb35b1c7ef83.pdf
    • http://files.victoryjiujitsu.com/uploads/1/3/2/6/132683142/tewijijamifuna_mewenukos_deminudedi_nobifitetala.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/2764/5084/files/86168762182.pdf
    • https://cdn.shopify.com/s/files/1/0431/6761/3089/files/76303543404.pdf
    • https://cdn.shopify.com/s/files/1/0433/6913/6284/files/robajigimawa.pdf
    • https://cdn.shopify.com/s/files/1/0433/1690/4104/files/fufakiwo.pdf
    • https://cdn.shopify.com/s/files/1/0439/8622/3262/files/grammar_practice_book_grade_6.pdf
    • https://cdn.shopify.com/s/files/1/0430/6462/3265/files/65244343685.pdf
    • https://cdn.shopify.com/s/files/1/0433/2178/6521/files/7080934631.pdf
    • https://cdn.shopify.com/s/files/1/0433/3076/4955/files/nawogutosotenaneg.pdf
    • https://cdn.shopify.com/s/files/1/0427/9874/3719/files/vewema.pdf
    • https://cdn.shopify.com/s/files/1/0433/7840/9639/files/sozige.pdf
    • https://cdn.shopify.com/s/files/1/0435/5486/5320/files/pdf_file_compress_online_1mb.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_off000067eb.bin
4aaf1cbc1df98d14b0caef916f01b051df0e93cfdca452799544e0f69fb0509b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67EB 5636 bytes
font_01_sfnt_off00007aff.bin
dc2041af23eb2e53087ff472f15d4b9f7eab55d4c383aa270e1d63f6a73593b0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7AFF 9804 bytes

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