Malicious PDF — malware analysis report

Static analysis result for SHA-256 f30c1034ddecb8ee…

MALICIOUS

PDF

60.0 KB Created: 2020-08-13 16:41:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c6465d43cc1ae0ad01b4f4433341aaa5 SHA-1: 148058f02c60f494ec8d91b8ae37d9a46380038b SHA-256: f30c1034ddecb8ee6c996d219a814e0dc9c41369d3423d29175b135ce6fc0673
152 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, disguised as a service manual. The document body, though malformed, includes the target URL and references to 'Toyota yaris verso 2001 service manual', suggesting a lure to trick users into clicking the malicious link. The presence of numerous other PDF links further indicates a link farm or SEO poisoning tactic to distribute 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.cc/wb?keyword=toyota%20yaris%20verso%202001%20service%20manual
    • http://pukoki.tridentwater.com.sg/uploads/1/3/1/1/131164250/zopesorupi.pdf
    • http://files.thefraternalsociety.org/uploads/1/3/1/6/131606605/sotinulo_sosajosugukurig.pdf
    • http://files.themazzage.com/uploads/1/3/0/7/130775750/7dd7e68417a26d7.pdf
    • http://files.lennoxweb.com/uploads/1/3/2/6/132696030/291007.pdf
    • http://files.bucklesandbeads.com/uploads/1/3/0/7/130776499/74965814a81.pdf
    • https://cdn.shopify.com/s/files/1/0428/8066/3705/files/tewabareredinix.pdf
    • https://cdn.shopify.com/s/files/1/0431/1570/8573/files/gisosunikawel.pdf
    • https://cdn.shopify.com/s/files/1/0428/6775/3116/files/etat_de_rapprochement_bancaire_exercice.pdf
    • https://cdn.shopify.com/s/files/1/0430/7625/5897/files/90053854342.pdf
    • https://cdn.shopify.com/s/files/1/0430/8975/6311/files/karetexelivelutuvuregalo.pdf
    • https://cdn.shopify.com/s/files/1/0432/5693/8658/files/comptia_security_study_guide_sy0-_401.pdf
    • https://cdn.shopify.com/s/files/1/0431/1125/2132/files/kinakejovidufutivenoki.pdf
    • https://cdn.shopify.com/s/files/1/0431/1806/7866/files/45411290248.pdf
    • https://cdn.shopify.com/s/files/1/0436/1119/3501/files/89768001764.pdf
    • https://cdn.shopify.com/s/files/1/0432/8361/1801/files/manogekalezovubax.pdf
    • https://cdn.shopify.com/s/files/1/0436/9429/3142/files/nerusimilok.pdf
    • https://cdn.shopify.com/s/files/1/0430/9866/9220/files/50387199187.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_off00009aa0.bin
b983c8198255ab39902c2a4cbaaf97dd70a76b175e969f94c361e102b60e3b4c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9AA0 5380 bytes
font_01_sfnt_off0000ace9.bin
17ff45b2047eda32f2264089db55d8ec9cd8ffdbd0d3ef926de1331b778f783d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xACE9 16992 bytes

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