Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc32d2500532fa02…

MALICIOUS

PDF

37.0 KB Created: 2020-08-18 13:20:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bfd1f551ad10d890c7c3a873095b5d52 SHA-1: 90054ffdb2b036bddf987bb5b7995910f2812814 SHA-256: dc32d2500532fa021819d7f599bf2d79d4858c61e9128df7693e8c2889324d05
150 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, which is also present in the document body. The link leads to 'https://ttraff.cc/pify?keyword=pico+alphabet+font+free', suggesting a lure for free content that redirects to malicious infrastructure. The presence of numerous other PDF links, many hosted on Shopify, indicates a link farm or SEO poisoning attempt to distribute malicious content.

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=pico+alphabet+font+free
    • http://files.introrobertburns.com/uploads/1/3/0/8/130874055/jotopiwuj.pdf
    • http://files.fbcmprek.com/uploads/1/3/0/7/130739202/reparaz.pdf
    • http://files.psychocare.org/uploads/1/3/1/4/131453982/xusozigik.pdf
    • https://cdn.shopify.com/s/files/1/0433/3436/9438/files/paradise_lost_book_1_questions.pdf
    • https://cdn.shopify.com/s/files/1/0429/9938/2170/files/pilavesogomovu.pdf
    • https://cdn.shopify.com/s/files/1/0431/4890/2557/files/kaxumeferiwenanobuvep.pdf
    • https://cdn.shopify.com/s/files/1/0432/9085/3534/files/coriolis_flow_meter_principle.pdf
    • https://cdn.shopify.com/s/files/1/0440/3088/6053/files/bluestacks_3_for_laptop.pdf
    • https://cdn.shopify.com/s/files/1/0435/4070/9527/files/magic_chef_oven_manual.pdf
    • https://cdn.shopify.com/s/files/1/0438/2516/8544/files/handwriting_without_tears_lined_paper_template.pdf
    • https://cdn.shopify.com/s/files/1/0435/2396/5079/files/apprendre_l_italien_livre.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_off000040da.bin
783811b2ef43b5402358d31c38a638cd08d169e493e22b170d1f4cbbe2cde567		 pdf-font-stream PDF embedded font (sfnt) at offset 0x40DA 5068 bytes
font_01_sfnt_off00005202.bin
13df720c72135e7e45596fc45f80ad4d82b31de6ff318a1f73cbfdf6587253f2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5202 9416 bytes
font_02_sfnt_off00007284.bin
e8051d68498e63029d7c34361d406bcd46815681d18da0e8952f0660ee027cca		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7284 16084 bytes

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