Malicious PDF — malware analysis report

Static analysis result for SHA-256 057861c30b155256…

MALICIOUS

PDF

46.5 KB Created: 2020-08-08 09:41:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8dbc4a0d3fc6d7fc080a4f9e26fce7c3 SHA-1: d2e74271893a2a69ba489b47880037158575c20d SHA-256: 057861c30b15525649707e296c9a83e811d6339393a931eefb9e5004ad8b51c0
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded links, many of which point to a link farm hosted on Shopify, and one critical link redirects to a known malicious infrastructure. The document body, though heavily obfuscated, contains text related to 'waste management plan template pdf' and a URL that is also present in the heuristics. This suggests a phishing or scam attempt designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=waste+management+plan+template+pdf
    • http://files.tindelltraining.com/uploads/1/3/1/4/131453214/xedoruwuxomukok-mijam.pdf
    • http://fewutir.demolitiondownersgroveil.com/uploads/1/3/0/7/130775934/kopoxekabarisajono.pdf
    • http://files.cupofhealthacupuncture.com/uploads/1/3/0/7/130776439/d401823.pdf
    • http://waxebom.mcdanielschoollibrarianship.com/uploads/1/3/1/0/131071164/sotusafomazifav.pdf
    • http://xogenixa.creaturefxinc.com/uploads/1/3/1/4/131453870/4271911793e21.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/5425/9606/files/10613513818.pdf
    • https://cdn.shopify.com/s/files/1/0435/5702/8001/files/88710153009.pdf
    • https://cdn.shopify.com/s/files/1/0437/5330/8314/files/utilitarian_approach_to_ethics.pdf
    • https://cdn.shopify.com/s/files/1/0440/6919/1832/files/30742506888.pdf
    • https://cdn.shopify.com/s/files/1/0433/1238/2117/files/70979044748.pdf
    • https://cdn.shopify.com/s/files/1/0434/6436/0100/files/71217324613.pdf
    • https://cdn.shopify.com/s/files/1/0429/9112/4643/files/software_architecture_interview_questions.pdf
    • https://cdn.shopify.com/s/files/1/0433/4085/7494/files/toxufijez.pdf
    • https://cdn.shopify.com/s/files/1/0434/1438/8888/files/telowowewimuwodibilukuw.pdf
    • https://cdn.shopify.com/s/files/1/0431/9795/6258/files/chirality_of_amino_acids.pdf
    • https://cdn.shopify.com/s/files/1/0435/1596/9688/files/63807200242.pdf
    • https://cdn.shopify.com/s/files/1/0435/3864/5144/files/8015667774.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/51031200676.pdf
    • https://cdn.shopify.com/s/files/1/0434/0452/5720/files/xafemorifesilig.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000077bb.bin
e11c2e6079276b7522beb94cf7203506b3b9372df3ea7035f628c1f1b73aa9c5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77BB 5280 bytes
font_01_sfnt_off000089b2.bin
9c33222261aa6214a271c3b13604b3afac3813f6a71795b291547c29c5512ed1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x89B2 10236 bytes

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