Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc7bc07c8065a139…

MALICIOUS

PDF

45.1 KB Created: 2020-08-22 09:50:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: af4ef0ac52dfa371010dd759fc69a847 SHA-1: 1f54adb119bb55f8c4b0fb0f71d7565d6e8286b7 SHA-256: cc7bc07c8065a1393c8a2b061312c49607399d60876a78a5c78ac190092c943f
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com, and one critical link to a known malicious redirector at ttraff.ru. The document body, though heavily obfuscated, contains the text 'Best kundli software for pc free' and the malicious URL, suggesting a lure to trick users into clicking on potentially harmful links. No scripts were extracted from this sample.

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=best+kundli+software+for+pc+free
    • http://busudu.amandazoe.co.uk/uploads/1/3/2/3/132303374/ninebuwa.pdf
    • http://files.theglowdancecompany.com/uploads/1/3/1/4/131438809/pokunobiserot.pdf
    • http://files.charlottechiphi.com/uploads/1/3/1/4/131438193/mufuxefixelujaj_zatimanemupadis_terop.pdf
    • https://cdn.shopify.com/s/files/1/0432/7338/8190/files/rovifiku.pdf
    • https://cdn.shopify.com/s/files/1/0432/9711/2219/files/learning_autocad_plant_3d.pdf
    • https://cdn.shopify.com/s/files/1/0432/6676/9058/files/34047308675.pdf
    • https://cdn.shopify.com/s/files/1/0437/4416/6037/files/bse_odisha_8th_class_geography_book_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/5162/2305/files/71930136375.pdf
    • https://cdn.shopify.com/s/files/1/0431/3006/0955/files/dl_youtube_audio.pdf
    • https://cdn.shopify.com/s/files/1/0431/1141/5959/files/98243096807.pdf
    • https://cdn.shopify.com/s/files/1/0431/8937/1029/files/78596802630.pdf
    • https://cdn.shopify.com/s/files/1/0434/1900/9189/files/balancing_chemical_equations_questions.pdf
    • https://cdn.shopify.com/s/files/1/0437/6671/0429/files/prentice_hall_geometry_teacher_edition.pdf
    • https://cdn.shopify.com/s/files/1/0432/2633/3351/files/12349728540.pdf
    • https://cdn.shopify.com/s/files/1/0432/6028/0982/files/duguzafedilasugawipipur.pdf
    • https://cdn.shopify.com/s/files/1/0433/9197/5580/files/8.pdf
    • https://cdn.shopify.com/s/files/1/0435/3681/0135/files/fakifa.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_off000064a0.bin
5731a83fa10afc9e754250a06d1e78e88dbf944d43001cdfd2d3ddc06989c76a
pdf-font-stream PDF embedded font (sfnt) at offset 0x64A0 5236 bytes
font_01_sfnt_off0000768f.bin
bb808614482253b7fe3a7550731dffdd5d1510425026ad7b43bc88e34324de30
pdf-font-stream PDF embedded font (sfnt) at offset 0x768F 10120 bytes
font_02_sfnt_off00009929.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378
pdf-font-stream PDF embedded font (sfnt) at offset 0x9929 4324 bytes