Malicious PDF — malware analysis report

Static analysis result for SHA-256 83d569fcedaa64c4…

MALICIOUS

PDF

38.7 KB Created: 2020-08-15 07:18:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b6b9c6fa2cfc6ef6d36d4bdba726c31d SHA-1: c33d95e13dec4269ad9e894fc056eebee436cf73 SHA-256: 83d569fcedaa64c4f56bb16e341a4a0a5eb8b2d32ea6166610df673406bee047
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, which is also present in the document body text. This link, 'https://ttraff.ru/pify?keyword=messenger+lite+apk++old+version', is designed to lure users into downloading potentially malicious content. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs pointing to various external resources, many of which are hosted on Shopify. The ML classifier also flagged this PDF with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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.ru/pify?keyword=messenger+lite+apk++old+version
    • http://lozutarij.judithasem.com/uploads/1/3/2/7/132740324/f0bcc29cc.pdf
    • http://wuwem.edenspabeirut.com/uploads/1/3/0/8/130874601/xabuxodusemibuk.pdf
    • http://pegakulow.shsvisualart.com/uploads/1/3/0/7/130739678/160723.pdf
    • http://rapila.discoveringhistory.org/uploads/1/3/2/3/132302780/rifogi.pdf
    • https://cdn.shopify.com/s/files/1/0433/9689/0785/files/howl_s_moving_castle_kissanime.pdf
    • https://cdn.shopify.com/s/files/1/0427/5997/9174/files/64440715316.pdf
    • https://cdn.shopify.com/s/files/1/0431/6341/8784/files/esl_worksheets_for_beginning_adults.pdf
    • https://cdn.shopify.com/s/files/1/0428/2938/1791/files/xibolopolomokediseji.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jikas.pdf
    • https://cdn.shopify.com/s/files/1/0436/4769/7049/files/55143502565.pdf
    • https://cdn.shopify.com/s/files/1/0427/5381/8790/files/ct_trang_file_online.pdf
    • https://cdn.shopify.com/s/files/1/0430/3123/2661/files/33868103381.pdf
    • https://cdn.shopify.com/s/files/1/0431/4356/1376/files/77094652207.pdf
    • https://cdn.shopify.com/s/files/1/0432/3121/5774/files/6442714490.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/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004cc1.bin
70c33b96cdc01f58f125620deedf9cb25d7182668c475c26ad748aa94cf8c8a5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4CC1 5044 bytes
font_01_sfnt_off00005df3.bin
be78d3f6148d5796e63d94e427b3647d778c856718c097aa59ca1a8caf425110		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DF3 10056 bytes
font_02_sfnt_off00007feb.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7FEB 4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.