Malicious PDF — malware analysis report

Static analysis result for SHA-256 a3f506d0040400cd…

MALICIOUS

PDF

59.5 KB Created: 2020-08-05 16:56:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 03a1c6eb863f1c792728fed85291f220 SHA-1: 24211cca7f6996f955704117870c6f9476e8176f SHA-256: a3f506d0040400cd5e55de4a3b1b8ee785d5f2b3052306d9fe44da29c9758eb1
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily obfuscated, also contains this URL. The PDF is structured as a link farm, with many embedded URLs, including the primary malicious one. The ML classifier also strongly indicated maliciousness.

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.com/pify?keyword=themes+of+metaphysical+poetry+pdf
    • http://files.nataliemariaclark.com/uploads/1/3/0/7/130774994/puzatadulejuti-wetuwivikug-zizez.pdf
    • http://mejajekar.bjeweledboutique.com/uploads/1/3/1/0/131070581/a035fde757c93.pdf
    • http://files.zwanzigerrealty.com/uploads/1/3/1/8/131871692/fegiwi-juzipivabo.pdf
    • http://files.castirongrilllubbock.com/uploads/1/3/0/9/130969717/47b9553b00f1.pdf
    • https://cdn.shopify.com/s/files/1/0436/8770/6777/files/afc_asian_cup_schedule.pdf
    • https://cdn.shopify.com/s/files/1/0435/3074/8072/files/10406465026.pdf
    • https://cdn.shopify.com/s/files/1/0435/1649/3976/files/vector_integral_calculus_problems_and_solutions.pdf
    • https://cdn.shopify.com/s/files/1/0433/9076/3175/files/82449457147.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/54440827626.pdf
    • https://cdn.shopify.com/s/files/1/0432/1663/4016/files/77654629736.pdf
    • https://cdn.shopify.com/s/files/1/0428/1381/6995/files/99825517460.pdf
    • https://cdn.shopify.com/s/files/1/0437/3574/4673/files/jazepimivupipot.pdf
    • https://cdn.shopify.com/s/files/1/0430/1750/2869/files/voter_id_card_form_6.pdf
    • https://cdn.shopify.com/s/files/1/0432/9845/5705/files/pewemowusogazorisefidefo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bovabokuvuxinapuwukiberem.pdf
    • https://cdn.shopify.com/s/files/1/0436/9121/2950/files/2602814094.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_off0000acde.bin
5737e2ab99eac867aa0fa73ab668b6a76c5f17d993fbb2a7c8d649d35c42b530		 pdf-font-stream PDF embedded font (sfnt) at offset 0xACDE 5444 bytes
font_01_sfnt_off0000bf3f.bin
d319400ac12b87ed5c1a00a3d11984d96b9faa6634c10b79a111d4e8217b7840		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBF3F 9876 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.