Malicious PDF — malware analysis report

Static analysis result for SHA-256 b04974ccce924359…

MALICIOUS

PDF

51.2 KB Created: 2020-08-03 12:02:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 03f18b1a990bb3c1c353e2ad1bc89696 SHA-1: 31621d1f18ee6654bebc9ea70c6dc2996dc71b9d SHA-256: b04974ccce92435981604334a88b97ef0da6173a8500a877a2744c3a210a5422
150 Risk Score

Malware Insights

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

The PDF was flagged by multiple critical heuristics for containing malicious redirector links and a link farm. The document body, though heavily obfuscated, contains the URL https://ttraff.cc/pify?keyword=arrest+of+descent+adalah+pdf, which is a known malicious redirector. The presence of numerous external links, many hosted on Shopify, suggests a tactic to distribute malicious content or phish users by overwhelming them with options or disguising malicious links among benign ones.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=arrest+of+descent+adalah+pdf
    • http://files.tecno-grafias.com/uploads/1/3/0/8/130814208/fesikiwogogorok-revefesajureve-gaben.pdf
    • http://files.philipmarcsonsofliberty.com/uploads/1/3/0/7/130739651/9113263.pdf
    • http://files.nawicsemn.org/uploads/1/3/0/8/130814172/wovorude.pdf
    • http://files.gold-condominium.com/uploads/1/3/2/6/132682639/vupesamije.pdf
    • https://cdn.shopify.com/s/files/1/0431/0358/4409/files/45803414675.pdf
    • https://cdn.shopify.com/s/files/1/0431/2183/6193/files/gawumukovivozeforab.pdf
    • https://cdn.shopify.com/s/files/1/0433/9322/0758/files/15666915788.pdf
    • https://cdn.shopify.com/s/files/1/0435/0954/7174/files/xenebovewetaxu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kepudanunakadop.pdf
    • https://cdn.shopify.com/s/files/1/0428/2312/3100/files/morigubiwugagigifevuze.pdf
    • https://cdn.shopify.com/s/files/1/0433/1136/6309/files/rogelejabiresafakopawoxe.pdf
    • https://cdn.shopify.com/s/files/1/0431/5247/4267/files/wasoriwip.pdf
    • https://cdn.shopify.com/s/files/1/0428/4717/4822/files/tmux_previous_window.pdf
    • https://cdn.shopify.com/s/files/1/0434/3159/2102/files/agatha_christie.pdf
    • https://cdn.shopify.com/s/files/1/0430/0954/0257/files/tonuribiralozukebixodejal.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_off000085f3.bin
c7f88718f70e8ef808db52f6fa6d09eda99b7a25ee290f2144fe69198778bf1c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x85F3 5232 bytes
font_01_sfnt_off000097bd.bin
a96ff8ea9f4530a41550b30a07157786f0c5ae01273ded8deb7dfe92da12d8b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x97BD 11880 bytes

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