Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c4ae50b2303e957…

MALICIOUS

PDF

52.7 KB Created: 2020-08-07 14:21:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a1558bbe93a8a5949bf61bc268177483 SHA-1: 70a9d0d57b390044801b66b4418f23b226039cfa SHA-256: 2c4ae50b2303e957c9abde05e45e71da7c72d957c2687be8790c506a9216eca3
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=camera+terms+pdf'. This indicates the document is designed to lure users to a malicious site. Additionally, the PDF exhibits characteristics of a link farm, with numerous external links, many hosted on cdn.shopify.com. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the presence of the malicious redirector URL is sufficient evidence for the attack pattern.

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=camera+terms+pdf
    • http://files.juliemakeshealthyfood.com/uploads/1/3/0/7/130775619/pirogo-badevoxofulutoz-xurosevobab-zuvis.pdf
    • http://files.hightechtintplus.com/uploads/1/3/2/3/132302973/47aff28564.pdf
    • http://files.triandrunfitness.com/uploads/1/3/1/4/131453048/115096.pdf
    • https://cdn.shopify.com/s/files/1/0433/3902/2494/files/bible_translations_chart.pdf
    • https://cdn.shopify.com/s/files/1/0429/7667/3946/files/3237167903.pdf
    • https://cdn.shopify.com/s/files/1/0433/1382/3909/files/lelilupelexutepopoxinodaw.pdf
    • https://cdn.shopify.com/s/files/1/0430/3116/7137/files/42210854139.pdf
    • https://cdn.shopify.com/s/files/1/0428/1512/7708/files/banelaranesoj.pdf
    • https://cdn.shopify.com/s/files/1/0451/0472/6168/files/wardlaw_s_contemporary_nutrition.pdf
    • https://cdn.shopify.com/s/files/1/0433/8463/5544/files/89941244664.pdf
    • https://cdn.shopify.com/s/files/1/0432/8249/7701/files/xijunuto.pdf
    • https://cdn.shopify.com/s/files/1/0434/7723/7913/files/tonujukijuzofivi.pdf
    • https://cdn.shopify.com/s/files/1/0439/9919/9390/files/champions_league_schedule_2020_20.pdf
    • https://cdn.shopify.com/s/files/1/0433/7745/9365/files/fowenadimuz.pdf
    • https://cdn.shopify.com/s/files/1/0433/7300/2902/files/84225138303.pdf
    • https://cdn.shopify.com/s/files/1/0433/4888/5662/files/git_tag_remove.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/
    • https://cdn.shopify.com/s/files/1/0432/8249/7701/f

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008462.bin
58a21c1822a3ac742e167c2025465cc1b94faac9c311fddb53a6c47f182960a4
pdf-font-stream PDF embedded font (sfnt) at offset 0x8462 4704 bytes
font_01_sfnt_off0000945c.bin
178088e45761d00a2d5e8fa17c0e183372c9d585e7b246864d67a590f3ccd584
pdf-font-stream PDF embedded font (sfnt) at offset 0x945C 10288 bytes
font_02_sfnt_off0000b799.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361
pdf-font-stream PDF embedded font (sfnt) at offset 0xB799 4324 bytes