Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f9bac2ab53aecad…

MALICIOUS

PDF

61.9 KB Created: 2020-08-26 03:03:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d26244b25d54e4d7ac228ecdcbe50288 SHA-1: d49ae51f3eb897db4056947265f611284bcd6e5c SHA-256: 9f9bac2ab53aecad49c9470225268d205397fdd21620157f3a4b5b6b6fad803b
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains embedded links, one of which, 'https://ttraff.me/pify?keyword=marathi+movies+2019+free++hd+quality', is flagged as a malicious redirector. The document body also contains this URL and appears to be a lure related to movie downloads, suggesting a phishing or malware distribution attempt. The ML classifier strongly supports the malicious verdict.

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.me/pify?keyword=marathi+movies+2019+free++hd+quality
    • http://files.summamomma.com/uploads/1/3/2/7/132740375/c23ed7d01.pdf
    • http://magazo.jvcai.org/uploads/1/3/1/4/131438500/f948f638.pdf
    • http://files.travelandfellowship.com/uploads/1/3/0/7/130739564/nimuzidosuzisigiwir.pdf
    • http://jemimas.naicob.org/uploads/1/3/1/4/131406717/9255758.pdf
    • http://kotija.acct301.ehabacademy.com/uploads/1/3/0/8/130813714/bupolo.pdf
    • https://cdn.shopify.com/s/files/1/0437/7041/3207/files/pedal_edema_in_pregnancy.pdf
    • https://cdn.shopify.com/s/files/1/0451/7547/2279/files/cellular_physiology_and_neurophysiology.pdf
    • https://cdn.shopify.com/s/files/1/0434/5711/8374/files/84792077740.pdf
    • https://cdn.shopify.com/s/files/1/0435/4048/0164/files/bajogakusimaka.pdf
    • https://cdn.shopify.com/s/files/1/0435/5381/6728/files/31023804883.pdf
    • https://cdn.shopify.com/s/files/1/0431/5525/9546/files/18774276043.pdf
    • https://cdn.shopify.com/s/files/1/0449/6248/0296/files/southwest_confirmation_number.pdf
    • https://cdn.shopify.com/s/files/1/0433/4885/2891/files/33795795018.pdf
    • https://cdn.shopify.com/s/files/1/0437/0569/6407/files/disacaridos_concepto.pdf
    • https://cdn.shopify.com/s/files/1/0457/0428/2268/files/57128297100.pdf
    • https://cdn.shopify.com/s/files/1/0434/8405/3669/files/29069589054.pdf
    • https://cdn.shopify.com/s/files/1/0431/0315/8433/files/lovulelobexewubifexulam.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008912.bin
02b7cec4b08fa7ba506df57666f2ab85f5d6c6ab2e70ead456a32242238c26ea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8912 5696 bytes
font_01_sfnt_off00009c7c.bin
6251e3ad60801faabad2744dc65b3913178b465674b900867cc023f7e06821c3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9C7C 14432 bytes
font_02_sfnt_off0000c9ca.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC9CA 4324 bytes
font_03_sfnt_off0000d7ca.bin
2f494fc753a4baf7facafa697129306ba5c7389c4226e2bd327721cebc4d1b59		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD7CA 4772 bytes

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