Malicious PDF — malware analysis report

Static analysis result for SHA-256 2af1302a2baeb6d1…

MALICIOUS

PDF

42.2 KB Created: 2020-08-18 13:48:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ab6a405a08ad8eda5017336ea058f820 SHA-1: df869cdd9eae555176b30f8bdca75ff87d6dc1b6 SHA-256: 2af1302a2baeb6d1d4bcefbfa6144eb5a48e3543dbc6e89060adf2a9dfa59e8f
150 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and contains a critical heuristic indicating a link to known malicious redirector infrastructure. The embedded URL `https://ttraff.com/pify?keyword=biotronik+orsiro+pdf` is the primary indicator of this malicious redirection. The document body, though heavily obfuscated, contains references to this URL, suggesting it is the intended lure.

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=biotronik+orsiro+pdf
    • http://files.allthethingsshesaid.com/uploads/1/3/0/9/130969577/tanebesi_depozasajevami_liraz.pdf
    • http://dogobe.freethequay.org/uploads/1/3/0/8/130814328/51b3fa05a1.pdf
    • http://xurowu.silencednomoreasoldierscourage.com/uploads/1/3/1/3/131398244/deniza.pdf
    • https://cdn.shopify.com/s/files/1/0428/4809/2323/files/inductive_load_and_capacitive_load.pdf
    • https://cdn.shopify.com/s/files/1/0433/9616/9886/files/rumazanafamu.pdf
    • https://cdn.shopify.com/s/files/1/0427/4946/0636/files/82604938959.pdf
    • https://cdn.shopify.com/s/files/1/0430/9201/7305/files/21407237111.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/98629167596.pdf
    • https://cdn.shopify.com/s/files/1/0430/8326/8263/files/kogamexufuwaditeriduv.pdf
    • https://cdn.shopify.com/s/files/1/0431/1423/4013/files/fezizul.pdf
    • https://cdn.shopify.com/s/files/1/0429/5095/1066/files/54890700977.pdf
    • https://cdn.shopify.com/s/files/1/0427/4513/5260/files/67220901224.pdf
    • https://cdn.shopify.com/s/files/1/0438/8693/6219/files/search_and_rescue_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/1870/6341/files/pisapedefipusaje.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_off00006865.bin
79d118d53d08d5c1ee32d251bd027da6bfdae16877be6cb10f5850cf0deee514		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6865 4908 bytes
font_01_sfnt_off0000792c.bin
a0e6bd2e547f48a2b4320c697620bfc361f834ce44a7b57501b5d74964963bc1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x792C 10276 bytes

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