Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc18651966d5aeb0…

MALICIOUS

PDF

45.6 KB Created: 2020-08-12 05:52:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4db57b9f6998315e3b050dd1088d1c18 SHA-1: 9dd8add151b72567561c599ccda36a59bc01a679 SHA-256: fc18651966d5aeb0620b4ae8288f6ea94129baae5900c85fad7fa445fd2a2109
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on various domains. One critical heuristic firing indicates that the PDF links to known malicious redirector infrastructure, specifically 'ttraff.cc', which is used to obscure the final destination. The document body text also contains the lure 'Bard of blood book pdf download free', suggesting a social engineering tactic to entice users to click the malicious links. No scripts were extracted from this sample.

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=bard+of+blood+book+pdf+download+free
    • http://files.mendedfaith.com/uploads/1/3/1/4/131408798/sefebumekukire-navufaj-pubefizoloso-kutotodop.pdf
    • http://files.wokingminiaturerailwaysociety.com/uploads/1/3/1/0/131070845/7665782.pdf
    • http://files.sketchcoffee.com/uploads/1/3/1/4/131437307/284e1.pdf
    • http://xedivep.bristoldoughnut.co/uploads/1/3/0/9/130969077/bozikejub-manasok-gijuna.pdf
    • http://pidarute.hireaecdirect.com/uploads/1/3/2/7/132740541/misumubagi-rapubutawekin.pdf
    • https://cdn.shopify.com/s/files/1/0432/1103/0683/files/780141473.pdf
    • https://cdn.shopify.com/s/files/1/0433/2378/5370/files/buluromelanusef.pdf
    • https://cdn.shopify.com/s/files/1/0431/0417/4233/files/81003731711.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wemulaw.pdf
    • https://cdn.shopify.com/s/files/1/0435/5876/4696/files/55348005696.pdf
    • https://cdn.shopify.com/s/files/1/0436/7984/2457/files/3972700470.pdf
    • https://cdn.shopify.com/s/files/1/0427/9838/3260/files/anthropology_optional_notes.pdf
    • https://cdn.shopify.com/s/files/1/0432/9078/7996/files/kitaaba_barataa_afaan_oromoo_kutaa_11.pdf
    • https://cdn.shopify.com/s/files/1/0431/0423/9770/files/zeloxaturufaguwibebo.pdf
    • https://cdn.shopify.com/s/files/1/0432/3776/9383/files/20244457563.pdf
    • https://cdn.shopify.com/s/files/1/0433/7877/0076/files/hippolytus_of_rome_apostolic_tradition.pdf
    • https://cdn.shopify.com/s/files/1/0435/2249/0528/files/santoral_catolico_2020.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_off00007304.bin
321771970906cb03801a667a01ea6939c582bc08e2485fb8b311521b7652657a
pdf-font-stream PDF embedded font (sfnt) at offset 0x7304 5200 bytes
font_01_sfnt_off000084db.bin
b3b50c18251903c06ae58cbd057fd17e5e44f00d107218acc71b4963a5777642
pdf-font-stream PDF embedded font (sfnt) at offset 0x84DB 10692 bytes