Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8d2c77a0008e20d…

MALICIOUS

PDF

46.0 KB Created: 2020-08-14 09:36:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d6b1bd87cf1ebcc9a8a0e331f01da2ce SHA-1: ba7ed5844abbbbe03c44206540aceb7df9238d90 SHA-256: c8d2c77a0008e20d4ea263428d39880d5fa9bf29559a79a1c81c605caf218772
152 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, with one identified as a known malicious redirector. The ML classifier also strongly indicated maliciousness. The document body contains garbled text but includes the URL 'https://ttraff.ru/pify?keyword=raaz+2002+movie', which is likely the primary malicious destination. The presence of numerous links suggests a link farm or a phishing attempt to lure users to malicious content.

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.ru/pify?keyword=raaz+2002+movie
    • http://files.co-created.org/uploads/1/3/2/8/132815015/5824542.pdf
    • http://radupo.18ril.org/uploads/1/3/1/6/131607600/warudaxelulire.pdf
    • http://jekekuko.spencer-amaral.com/uploads/1/3/2/8/132814930/ronutowu-kenafenoxigok-gudonalogar-ruzigarowod.pdf
    • http://files.byzariyahj.com/uploads/1/3/0/7/130776152/c4e064a17281680.pdf
    • https://cdn.shopify.com/s/files/1/0435/1026/8064/files/48583161758.pdf
    • https://cdn.shopify.com/s/files/1/0433/5802/7928/files/tukat.pdf
    • https://cdn.shopify.com/s/files/1/0434/2172/8933/files/sinusitis_signos_y_sintomas.pdf
    • https://cdn.shopify.com/s/files/1/0431/3523/8301/files/pivudos.pdf
    • https://cdn.shopify.com/s/files/1/0439/6656/2462/files/defuzaxujivur.pdf
    • https://cdn.shopify.com/s/files/1/0429/8945/3473/files/besaseteliliwofatosa.pdf
    • https://cdn.shopify.com/s/files/1/0429/1588/9305/files/50681106843.pdf
    • https://cdn.shopify.com/s/files/1/0431/0849/9618/files/sifav.pdf
    • https://cdn.shopify.com/s/files/1/0428/0477/3031/files/vifeviniwesi.pdf
    • https://cdn.shopify.com/s/files/1/0432/5680/7586/files/the_psychology_of_body_language_joe_navarro.pdf
    • https://cdn.shopify.com/s/files/1/0432/5395/6766/files/60546482196.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000628f.bin
93adde98916edd58ee50b90c3ed63d7d0f1cb018129399371d8fbe02cc0a7102		 pdf-font-stream PDF embedded font (sfnt) at offset 0x628F 4916 bytes
font_01_sfnt_off0000734a.bin
6893943b13ad8038323f1ffd757e1e01c792613ca5d43e060de3911181e85b9b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x734A 10108 bytes
font_02_sfnt_off00009629.bin
6e3fbd491d8b71441998836ddca0d0c102716a221ea14f8143929167ad9a79b3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9629 16164 bytes

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