Malicious PDF — malware analysis report

Static analysis result for SHA-256 42bda3287f324d68…

MALICIOUS

PDF

47.0 KB Created: 2020-08-05 07:57:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 600eca5794fa0d82f20644b10698dd26 SHA-1: 65e788036c56a2b6daac45f45624682992387950 SHA-256: 42bda3287f324d68baf4a3033289fb93fe5a5e173bf7398bf80d1a293d9a72c9
128 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, a technique often used to create link farms for SEO manipulation or to obscure malicious destinations. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.cc/pify?keyword=application+octet+stream+pdf+php'. While many linked Shopify URLs are benign, the presence of the redirector and the sheer volume of links suggest a malicious workflow aimed at directing users to harmful content.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=application+octet+stream+pdf+php
    • http://files.womenartistsreaction.com/uploads/1/3/2/3/132302863/8d22be5d98d153.pdf
    • http://tulokano.vathespian.org/uploads/1/3/0/7/130739024/fugowiropaxiraviva.pdf
    • http://files.meditation-magic.com/uploads/1/3/1/6/131607163/kufovotuturafuwer.pdf
    • https://cdn.shopify.com/s/files/1/0434/7074/9849/files/antologa_de_cuentos_de_terror.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/45235944591.pdf
    • https://cdn.shopify.com/s/files/1/0429/7133/2767/files/atomic_alarm_clock.pdf
    • https://cdn.shopify.com/s/files/1/0430/8962/5250/files/megoguxuwerobebifep.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/baxumedufimoval.pdf
    • https://cdn.shopify.com/s/files/1/0432/1227/5870/files/26652633255.pdf
    • https://cdn.shopify.com/s/files/1/0431/6754/7552/files/63698726338.pdf
    • https://cdn.shopify.com/s/files/1/0431/6204/2529/files/king_of_the_trollhaunt_warrens.pdf
    • https://cdn.shopify.com/s/files/1/0428/9649/0655/files/32916395558.pdf
    • https://cdn.shopify.com/s/files/1/0434/7245/3797/files/xakuzid.pdf
    • https://cdn.shopify.com/s/files/1/0433/2978/1918/files/zisirugop.pdf
    • https://cdn.shopify.com/s/files/1/0433/4885/2891/files/33545346938.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/58580374151.pdf
    • https://cdn.shopify.com/s/files/1/0434/0521/3854/files/75653536974.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_off000064e1.bin
f7c9c5313cd13ccb0da18c2ff989914fdd2ff814a3688adc9193c6a348975e7c
pdf-font-stream PDF embedded font (sfnt) at offset 0x64E1 5384 bytes
font_01_sfnt_off000076fe.bin
51ebeec29509b87aa858d500e37ac8853184703d07d1f913ce36d8e1dc7764c0
pdf-font-stream PDF embedded font (sfnt) at offset 0x76FE 1800 bytes
font_02_sfnt_off00007f8c.bin
a4c65ca90f219cf891458365233d7500525d65588b676a6792d9273ea8498f5c
pdf-font-stream PDF embedded font (sfnt) at offset 0x7F8C 15008 bytes