Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf51352e3b3117c8…

MALICIOUS

PDF

43.1 KB Created: 2020-08-21 07:51:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 98715dec8f8b174c3b41fc206a90e319 SHA-1: 2d3a73cb1c4464f712230b908a879f65fa7e456f SHA-256: bf51352e3b3117c8fabcd0eca59af04c2be7d06c8e7330de9824bc03b0527d95
150 Risk Score

Malware Insights

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

The PDF contains a prominent link with the text 'New aadhar card form online registration' that redirects to a malicious URL (ttraff.cc). This indicates a phishing or scam attempt, likely to harvest personal information or deliver further malware. The PDF also contains a large number of external links, many hosted on Shopify, which is flagged as a link farm. The ML classifier strongly supports the malicious nature of this PDF.

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=new+aadhar+card+form+online+registration
    • http://files.califiltrations.com/uploads/1/3/0/8/130873921/maxurenobika_dunagasinigeze.pdf
    • http://files.chartiergrp.com/uploads/1/3/0/7/130775231/1533294.pdf
    • http://files.fillmorepaws.com/uploads/1/3/0/7/130776439/8a26fe1d.pdf
    • http://bokiwuka.brandonlakefamily.ca/uploads/1/3/1/8/131872225/jexidogeku-bosonowilefaxar-libizetot-mujewuzodukok.pdf
    • http://veniziro.aghsband.com/uploads/1/3/1/6/131607240/fexosumusanago_godaguxuw.pdf
    • https://cdn.shopify.com/s/files/1/0435/3989/0327/files/66229290251.pdf
    • https://cdn.shopify.com/s/files/1/0453/2862/9915/files/baseline_study.pdf
    • https://cdn.shopify.com/s/files/1/0432/3724/5086/files/victor_s_piano_solo_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0432/9875/0629/files/gaxapilunapigurerup.pdf
    • https://cdn.shopify.com/s/files/1/0433/1700/2405/files/fexurabogo.pdf
    • https://cdn.shopify.com/s/files/1/0428/4815/7859/files/39061820923.pdf
    • https://cdn.shopify.com/s/files/1/0437/2096/6293/files/ramisafajejifotaw.pdf
    • https://cdn.shopify.com/s/files/1/0436/8711/6965/files/understanding_culture_society_and_politics_book_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/1045/6726/files/62846345837.pdf
    • https://cdn.shopify.com/s/files/1/0427/6905/5911/files/95252228019.pdf
    • https://cdn.shopify.com/s/files/1/0436/2059/7922/files/kafunagizifetawowidijal.pdf
    • https://cdn.shopify.com/s/files/1/0427/7361/0663/files/calendar_2020_islamic_and_english.pdf
    • https://cdn.shopify.com/s/files/1/0437/6428/5601/files/13450025265.pdf
    • https://cdn.shopify.com/s/files/1/0433/0110/9920/files/vukama.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_off00006e5e.bin
3e81e03b7e4a3b7294a07c64a109ad3bfd4157b55ba465942a850213ae933fcd
pdf-font-stream PDF embedded font (sfnt) at offset 0x6E5E 5496 bytes
font_01_sfnt_off000080f8.bin
4a1cab9d0f2f0f53ec4983c07295d87af8c31dc296bb01d428c364a8b95b70ec
pdf-font-stream PDF embedded font (sfnt) at offset 0x80F8 8736 bytes