Malicious PDF — malware analysis report

Static analysis result for SHA-256 16324d4e7e0e8edb…

MALICIOUS

PDF

40.6 KB Created: 2020-08-24 06:51:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 08a48a72c217cdd08db151f64e16d572 SHA-1: 5aa194a89d3da21795af1986de4d125a0e1825be SHA-256: 16324d4e7e0e8edb346fc60f13f80252066d6cf4f64276932d222432819cdd46
154 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for linking to known malicious redirector infrastructure, specifically pointing to 'ttraff.cc'. The document body, though heavily obfuscated, contains text suggesting a lure related to a 'battleship template excel' and includes the malicious URL. The presence of numerous external PDF links, many hosted on Shopify, further indicates a link farm or redirection scheme designed to obscure the ultimate destination.

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=battleship+template+excel
    • http://zobene.mmva.co.uk/uploads/1/3/2/7/132740978/40a53f0496d7b2f.pdf
    • http://files.frhstrainingconsultants.com/uploads/1/3/1/4/131453945/zakisu-wategefod-davafiko-zubixifexaxeg.pdf
    • http://files.lamodemagazine.net/uploads/1/3/0/9/130969808/veradekosa.pdf
    • http://vetavonif.lastwordsfortheroad.com/uploads/1/3/1/4/131438464/xabadula.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0434/0331/3308/files/29974716560.pdf
    • https://cdn.shopify.com/s/files/1/0432/1663/4016/files/65935518701.pdf
    • https://cdn.shopify.com/s/files/1/0430/0872/1045/files/90786800518.pdf
    • https://cdn.shopify.com/s/files/1/0432/6916/1110/files/74203760962.pdf
    • https://cdn.shopify.com/s/files/1/0434/5616/8093/files/42667767292.pdf
    • https://cdn.shopify.com/s/files/1/0446/9984/4762/files/history_of_kashmir_in_urdu_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0429/9672/7962/files/35451484734.pdf
    • https://cdn.shopify.com/s/files/1/0432/0935/9520/files/confidential_litigant_information_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0433/1008/8357/files/7560539933.pdf
    • https://cdn.shopify.com/s/files/1/0430/0849/1673/files/roxazavanizokepaze.pdf
    • https://cdn.shopify.com/s/files/1/0460/4094/0708/files/aminoacidos_glucogenicos_y_cetogenicos.pdf
    • https://cdn.shopify.com/s/files/1/0435/3051/8682/files/67775097913.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_off00005285.bin
25f166c43eca66a5f1ef8c9b121b711d1c70fe85b5f74bf0ac0d906865bf54df		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5285 4768 bytes
font_01_sfnt_off000062b6.bin
1fa3e571afa832986ecb9599e856a74bddbf0064d11929d66535fac6b524328d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62B6 10608 bytes
font_02_sfnt_off000086d5.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0x86D5 4324 bytes

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