Malicious PDF — malware analysis report

Static analysis result for SHA-256 b369f82ffce581bd…

MALICIOUS

PDF

38.7 KB Created: 2020-09-13 09:02:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 045cb12acb13a669621c6fa2525dd6d6 SHA-1: 0f4c7c59dd96dbbbb24428f7cf82f21479bc5ae2 SHA-256: b369f82ffce581bd4781808053aafa8cc6780e56f48ddb4c6d31480adead196a
150 Risk Score

Malware Insights

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

The PDF file was flagged by multiple critical heuristics for containing malicious redirector links and a large number of external PDF links, indicative of a link farm or SEO poisoning attack. The embedded URL 'https://ttraff.com/pify?keyword=a+guide+for+the+married+man+streaming' is a strong indicator of malicious intent, likely to redirect users to a phishing or malware distribution site. The document body contains garbled text along with some URLs, further supporting the malicious nature of the file.

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=a+guide+for+the+married+man+streaming
    • http://zajigi.janettoomespiano.com/uploads/1/3/0/8/130813604/dibesobojo.pdf
    • http://files.fitzwrestlingacademy.com/uploads/1/3/2/8/132814136/af34df.pdf
    • http://kefas.broken-kingdom.com/uploads/1/3/0/8/130874422/0480a58525495d.pdf
    • http://sodatitem.barellanshow.com/uploads/1/3/1/4/131407535/06ff91.pdf
    • http://pabumos.saltxpepper.com/uploads/1/3/1/6/131636755/614155ae.pdf
    • http://saboni.pradipamladi.com/uploads/1/3/0/7/130776031/paxinawamaluwitimol.pdf
    • https://cdn.shopify.com/s/files/1/0432/6758/8252/files/xovewa.pdf
    • https://cdn.shopify.com/s/files/1/0429/3401/0015/files/jadiga.pdf
    • https://cdn.shopify.com/s/files/1/0438/8470/7992/files/ayyappa_swamy_kannada_devotional_songs.pdf
    • https://cdn.shopify.com/s/files/1/0429/4469/2383/files/the_anatomy_coloring_book_wynn_kapit.pdf
    • https://static.usrfiles.com/ugd/5dc3ca_b83cb4f27c354d7e9086a2b2aa5c79c3.pdf
    • https://static.usrfiles.com/ugd/97aff7_93c369e87a2d43e7aabd811f6e02a7f2.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_off00005729.bin
31fffc68f31631f78b1b9e15ff0a4db1dde05e696b7f01e1e580bb3dc0f9d03d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5729 5280 bytes
font_01_sfnt_off000068f2.bin
9da5f05ff349b62a45e80827d0ce4cd7d4a8ff02117214287da39f39c238004c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68F2 10972 bytes

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