Malicious PDF — malware analysis report

Static analysis result for SHA-256 49a7271c773f25a4…

MALICIOUS

PDF

45.4 KB Created: 2020-08-05 11:57:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 71bd669ab6be1d3fee58c0b81a9340ff SHA-1: 178a7578ef015f009b8c8ecaeb6adc5fbdc4d022 SHA-256: 49a7271c773f25a45410dc1fc209470c391a4f0aa18be20e3614340d1da8d4c4
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 link farm hosted on cdn.shopify.com. One of the embedded links, https://ttraff.cc/pify?keyword=to+chicago+and+back+aleko+konstantinov+pdf, is identified as a malicious redirector. This suggests the document is designed to lure users to malicious infrastructure, likely for further exploitation or phishing. 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=to+chicago+and+back+aleko+konstantinov+pdf
    • http://files.anjoybaskets.ca/uploads/1/3/2/6/132682655/siruxe.pdf
    • http://files.echocanada.org/uploads/1/3/1/4/131453724/7181768.pdf
    • http://files.e3educate.org/uploads/1/3/1/1/131163736/kosufililup.pdf
    • http://files.skylineinspectionsinc.com/uploads/1/3/1/3/131383541/bowefisigar.pdf
    • http://files.darlingcharacterparties.com/uploads/1/3/2/6/132695719/lupajidegolug.pdf
    • https://cdn.shopify.com/s/files/1/0439/4595/1400/files/properties_of_benzoic_acid.pdf
    • https://cdn.shopify.com/s/files/1/0430/6852/2657/files/american_english_file_level_1.pdf
    • https://cdn.shopify.com/s/files/1/0433/6232/0536/files/63894324364.pdf
    • https://cdn.shopify.com/s/files/1/0431/0794/2549/files/starbucks_supply_chain_case_study.pdf
    • https://cdn.shopify.com/s/files/1/0434/7694/3000/files/zexeluribi.pdf
    • https://cdn.shopify.com/s/files/1/0431/6200/9755/files/addison_wesley_math_makes_sense_6.pdf
    • https://cdn.shopify.com/s/files/1/0432/8272/7067/files/21827907370.pdf
    • https://cdn.shopify.com/s/files/1/0440/2541/3782/files/iluminasi_cahaya.pdf
    • https://cdn.shopify.com/s/files/1/0430/6750/6849/files/nazudosukuvuzipojolef.pdf
    • https://cdn.shopify.com/s/files/1/0434/2834/8056/files/lab_safety_quiz.pdf
    • https://cdn.shopify.com/s/files/1/0427/9674/4871/files/mazimexusebatede.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_off000065eb.bin
7485954beaa39ca9b986652e716e2903465e7e86c6e6d6569241df0e8606fad5
pdf-font-stream PDF embedded font (sfnt) at offset 0x65EB 5324 bytes
font_01_sfnt_off000077fb.bin
f019892a5e9892824219ac96de6ee547993849adb9470c32f5fd83a7e0ed75fa
pdf-font-stream PDF embedded font (sfnt) at offset 0x77FB 10088 bytes
font_02_sfnt_off00009a61.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378
pdf-font-stream PDF embedded font (sfnt) at offset 0x9A61 4324 bytes