Malicious PDF — malware analysis report

Static analysis result for SHA-256 aec73099578bfb52…

MALICIOUS

PDF

47.0 KB Created: 2020-08-24 00:12:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9daf7ad844eee8cb14205c302246bf26 SHA-1: 8dd03346a5a0eb2cb522e693be5f4fd92df16e1a SHA-256: aec73099578bfb5293132d794322cc279c90452c831838a945ff7b552e167df5
150 Risk Score

Malware Insights

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

The PDF contains a link that redirects to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body and embedded links suggest a lure for downloading a driver, which is a common tactic for malware delivery. The PDF_SEO_LINK_FARM heuristic indicates a large number of links, likely for SEO poisoning to increase visibility.

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=dell+latitude+e6420+bluetooth+driver+free
    • http://files.salemuccgilbertpa.com/uploads/1/3/2/6/132681392/2530921.pdf
    • http://files.sparklemobilevaleting.com/uploads/1/3/1/8/131871705/subutobam-pofofidanewiw-mosopegipozezis.pdf
    • http://files.magsaysaywecare.com/uploads/1/3/0/8/130813961/fipasaxikufi.pdf
    • http://files.homechoiceplanners.com/uploads/1/3/1/0/131070450/6860974.pdf
    • https://cdn.shopify.com/s/files/1/0462/3840/0661/files/wikenavepadofeluwalabox.pdf
    • https://cdn.shopify.com/s/files/1/0428/2885/7503/files/45705888102.pdf
    • https://cdn.shopify.com/s/files/1/0448/5585/3218/files/amylase_rich_food.pdf
    • https://cdn.shopify.com/s/files/1/0432/1558/5448/files/38406210451.pdf
    • https://cdn.shopify.com/s/files/1/0434/2402/2677/files/43643039798.pdf
    • https://cdn.shopify.com/s/files/1/0434/0252/6887/files/college_panda_sat_writing_2nd_edition.pdf
    • https://cdn.shopify.com/s/files/1/0431/8176/8872/files/gusugoseg.pdf
    • https://cdn.shopify.com/s/files/1/0438/1409/2960/files/mobegolotipegusugi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/61047377128.pdf
    • https://cdn.shopify.com/s/files/1/0428/4288/2215/files/pozijejon.pdf
    • https://cdn.shopify.com/s/files/1/0440/5549/4806/files/super_mario_world_source_code.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_off00007117.bin
140794570c4b0724e6a6c5424e18af01d69794d9b7d8c7ab6badbf56ab99c663		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7117 5532 bytes
font_01_sfnt_off000083e9.bin
70e6c23cd44d22ad4e4622194bb77ef49616097d30057d3338c4839e57cf2b24		 pdf-font-stream PDF embedded font (sfnt) at offset 0x83E9 13444 bytes

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