Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f720c12cae45974…

MALICIOUS

PDF

43.0 KB Created: 2020-08-09 17:23:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 822e53f7849a3919eadfe6ec6b1148f6 SHA-1: 62a6020abfe7c66c7c5c9fb7de80e8791d19806e SHA-256: 8f720c12cae4597415afe32d257947a9eac1d775c413e908679aa17871a843a6
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic identifying a malicious redirector at https://ttraff.com/pify. The document body and embedded links suggest a lure for users searching for specific PDF books, aiming to redirect them to malicious infrastructure. The presence of a malicious redirector indicates an attempt to deliver a secondary payload or phish credentials.

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.com/pify?keyword=english+to+bengali+dictionary+book+pdf+download
    • http://files.aaronsspeedshop.com/uploads/1/3/1/3/131378774/lejodu.pdf
    • http://files.kunzeartgallery.com/uploads/1/3/0/7/130739783/ropiput.pdf
    • http://files.mli-magazine.com/uploads/1/3/1/3/131398386/tijexazeriji.pdf
    • http://zipaw.themerlinplayers.org/uploads/1/3/2/3/132303382/muzutot_magojag_newokujebodurog.pdf
    • https://cdn.shopify.com/s/files/1/0431/1311/9905/files/39996369060.pdf
    • https://cdn.shopify.com/s/files/1/0431/8904/3358/files/ruxukenenigobezen.pdf
    • https://cdn.shopify.com/s/files/1/0450/5577/0776/files/schindler_s_list_music.pdf
    • https://cdn.shopify.com/s/files/1/0432/6385/2708/files/49473920662.pdf
    • https://cdn.shopify.com/s/files/1/0435/6866/0643/files/bomerakanu.pdf
    • https://cdn.shopify.com/s/files/1/0437/8044/0215/files/kent_county_inmate_search.pdf
    • https://cdn.shopify.com/s/files/1/0439/4899/8811/files/wendell_odom_icnd1.pdf
    • https://cdn.shopify.com/s/files/1/0433/0605/7888/files/71164358668.pdf
    • https://cdn.shopify.com/s/files/1/0438/8211/9323/files/vupuriwitumolebig.pdf
    • https://cdn.shopify.com/s/files/1/0436/4333/8912/files/10839820065.pdf
    • https://cdn.shopify.com/s/files/1/0431/1616/7328/files/wezokuputepegef.pdf
    • https://cdn.shopify.com/s/files/1/0432/0926/1217/files/vumiripepaxupufo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mupuxisupevijerabufogete.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_off000067bd.bin
865867fb3e5498871556a2a7607465653c58d969845ccd2ae31da18838c08e73		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67BD 5772 bytes
font_01_sfnt_off00007b78.bin
d25f4cc1938aae1a67a26a70bf3fdd96799dcf8de08d830ddd5a448beffaf2af		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B78 10296 bytes

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