Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c6de74323182540…

MALICIOUS

PDF

51.1 KB Created: 2020-08-20 09:11:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b4043de95496c0316f725807042d3fd8 SHA-1: 31f747cb769074059a3297a1ab71ae51c9455d99 SHA-256: 8c6de74323182540866886c1f3dbb11103d4069e70b696c83e9a4b5156194d12
150 Risk Score

Malware Insights

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

The PDF contains a lure related to "Jeans size guide eu to uk" and embeds a large number of links, including a critical redirector link to ttraff.cc. The ML classifier strongly flagged this PDF as malicious. The embedded links likely serve to distribute further malicious content or phish for credentials.

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.cc/pify?keyword=jeans+size+guide+eu+to+uk
    • http://pabevebuf.embodiedworkplace.com/uploads/1/3/1/3/131384016/cee72ba5.pdf
    • http://xapuru.mysuidora.com/uploads/1/3/1/4/131437626/nonumodawizerafos.pdf
    • http://ginidasa.mackbuildltd.com/uploads/1/3/1/8/131871825/sewum.pdf
    • http://rumun.privatecounsellingandmediation.com/uploads/1/3/0/7/130775565/6f575.pdf
    • https://cdn.shopify.com/s/files/1/0434/3431/1845/files/muluvewexazaladinemowiz.pdf
    • https://cdn.shopify.com/s/files/1/0429/5750/4668/files/wuvevujogi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/65107231385.pdf
    • https://cdn.shopify.com/s/files/1/0431/2521/1298/files/5937896261.pdf
    • https://cdn.shopify.com/s/files/1/0440/2541/3782/files/math_worksheets_adding_subtracting_fractions_mixed_numbers.pdf
    • https://cdn.shopify.com/s/files/1/0433/5396/4712/files/thin_bluestacks_app_player_for_pc.pdf
    • https://cdn.shopify.com/s/files/1/0434/3450/8455/files/make_smaller_file_size.pdf
    • https://cdn.shopify.com/s/files/1/0427/5663/6828/files/73960469116.pdf
    • https://cdn.shopify.com/s/files/1/0434/7586/1656/files/75326898766.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zotogobujadafozafinuv.pdf
    • https://cdn.shopify.com/s/files/1/0430/3169/1421/files/simple_present_past_future_tense_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0430/3798/2869/files/72917610420.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008247.bin
d589d8dceab6dbe0d74daae44a84cce8abc358223e85c3c774a43928a9af3dcb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8247 4968 bytes
font_01_sfnt_off00009350.bin
13a5568e5b2cf092fa21ae67f7557cb06a0c241f75f07128a56aa09f159be0ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9350 14368 bytes

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