Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f066d8d1bc37f6f…

MALICIOUS

PDF

51.4 KB Created: 2020-08-24 20:02:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c2619e12485b720ff85499a419b45057 SHA-1: b4b4829464cc86e26206342738800aeaf51905fc SHA-256: 9f066d8d1bc37f6ff3568e4ef680cad5d5bd4e8744020a80e1aba94161bc1690
150 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to a malicious domain, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though partially corrupted, suggests a lure related to an "Aluminum sheet thickness guide". The PDF_SEO_LINK_FARM heuristic indicates a large number of external links, likely for SEO manipulation or to distribute the malicious payload. The ML_NYX_PDF_MALICIOUS classifier strongly indicates malicious intent.

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=aluminum+sheet+thickness+guide
    • http://wurumom.themoviepress.com/uploads/1/3/2/8/132814930/wewilamujiv.pdf
    • http://files.socialclubofsp.org/uploads/1/3/1/4/131437421/xufukurepafik-vikesevozekuwo.pdf
    • http://files.evandusenportfolio.com/uploads/1/3/2/6/132682335/0c046fe2cca4d00.pdf
    • http://gepej.yogadiversityinitiative.org/uploads/1/3/1/4/131437261/laroli_pezogijavamu.pdf
    • https://cdn.shopify.com/s/files/1/0433/7680/3990/files/14329504828.pdf
    • https://cdn.shopify.com/s/files/1/0431/6535/2093/files/fajujiregevokiwin.pdf
    • https://cdn.shopify.com/s/files/1/0432/7089/7824/files/fuzuvinokoraraponus.pdf
    • https://cdn.shopify.com/s/files/1/0431/5529/2321/files/walmart_financial_statements.pdf
    • https://cdn.shopify.com/s/files/1/0432/3042/9352/files/tepuxipawolajabutow.pdf
    • https://cdn.shopify.com/s/files/1/0437/2663/5162/files/6555301487.pdf
    • https://cdn.shopify.com/s/files/1/0432/4121/0011/files/68865840527.pdf
    • https://cdn.shopify.com/s/files/1/0430/5325/2757/files/12406373279.pdf
    • https://cdn.shopify.com/s/files/1/0434/3411/5233/files/black_beatles_song_pagalworld.pdf
    • https://cdn.shopify.com/s/files/1/0433/1791/9909/files/kudumogelaterezuwojajorut.pdf
    • https://cdn.shopify.com/s/files/1/0432/3826/0903/files/44127626655.pdf
    • https://cdn.shopify.com/s/files/1/0438/6694/7744/files/basic_arabic_words_for_beginners.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_off00008004.bin
2d8221b9cfe07c238dc9659362e4b3f5173c4e1746623f6d2798ec071ccbb1bd
pdf-font-stream PDF embedded font (sfnt) at offset 0x8004 4872 bytes
font_01_sfnt_off00009060.bin
886ff3ab6ed1668f297617df8dacae57167ed77c6f4d3492727c8f2df7ee6926
pdf-font-stream PDF embedded font (sfnt) at offset 0x9060 9888 bytes
font_02_sfnt_off0000b24f.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176
pdf-font-stream PDF embedded font (sfnt) at offset 0xB24F 4324 bytes