Malicious PDF — malware analysis report

Static analysis result for SHA-256 2840b9fd8df82a57…

MALICIOUS

PDF

59.0 KB Created: 2020-08-10 07:12:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9067781e5470dd5c3e355f9dd2d27c68 SHA-1: 6d5fbddb03ec6dc072661cb308740272249a2e4f SHA-256: 2840b9fd8df82a57db70e80e23df6169c2fc2cf5b874b9f46d5be4123bf6a1d7
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a redirector service. The primary malicious URL identified is https://ttraff.ru/pify?keyword=neoliberalismo+en+chile+pdf, which is flagged as a malicious redirector. The document body, though heavily obfuscated, contains references to the redirector URL. The presence of numerous external links suggests an attempt to drive traffic to malicious infrastructure, likely for further exploitation or phishing.

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=neoliberalismo+en+chile+pdf
    • http://digafare.adornationforlife.com/uploads/1/3/2/6/132696212/7f308bf0.pdf
    • http://files.exchangedragon.org/uploads/1/3/1/4/131455398/138ed0f56fcc551.pdf
    • http://files.pajaritocaninesar.org/uploads/1/3/1/1/131164132/nogosorexeped.pdf
    • http://files.westfielddentalpa.com/uploads/1/3/0/7/130775942/bavef_kezujuwusuk_javexolizepun.pdf
    • http://tutupogo.agsomega.com/uploads/1/3/0/8/130874633/begomo.pdf
    • http://files.exchangedragon.org/uploads/1/3/1/4/131455398/13
    • https://cdn.shopify.com/s/files/1/0438/3404/8669/files/465461919.pdf
    • https://cdn.shopify.com/s/files/1/0436/1060/3677/files/tawasuxelejujovor.pdf
    • https://cdn.shopify.com/s/files/1/0431/3579/5354/files/lumokazefuralefupafu.pdf
    • https://cdn.shopify.com/s/files/1/0435/3739/9957/files/peanuts_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0440/5841/1158/files/92767506776.pdf
    • https://cdn.shopify.com/s/files/1/0437/6422/0055/files/68615955931.pdf
    • https://cdn.shopify.com/s/files/1/0433/7372/3800/files/37766366292.pdf
    • https://cdn.shopify.com/s/files/1/0445/9751/0308/files/logical_reasoning_questions_and_answers_for_cat.pdf
    • https://cdn.shopify.com/s/files/1/0432/4930/3720/files/slipknot_devil_in_i_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0429/2804/6233/files/39778706374.pdf
    • https://cdn.shopify.com/s/files/1/0431/4805/0586/files/fadikeguwewiwo.pdf
    • https://cdn.shopify.com/s/files/1/0430/7707/5108/files/oxford_bookworms_library_starter_the_girl_with_green_eyes.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_off0000a57d.bin
6cd1589b3de91abd5d951d28ae8f62dd1a30ce24e26c5e234d93349d2d4ae00b
pdf-font-stream PDF embedded font (sfnt) at offset 0xA57D 5504 bytes
font_01_sfnt_off0000b807.bin
a0cb8163d5da8f792daff3804bfae4bfbf7791fe063025f0e49450b2140cd33f
pdf-font-stream PDF embedded font (sfnt) at offset 0xB807 11416 bytes