Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd6520e43526951f…

MALICIOUS

PDF

37.9 KB Created: 2020-04-29 11:50:30 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: dcba339744c7785db6dfb8e0e9d41b7f SHA-1: 2757d69c1bcd5c2281654a72d3cc575ae0458a85 SHA-256: dd6520e43526951f05ea0e29f2b0b28c2ca3874078e47350c4d959db59d7ea89
94 Risk Score

Malware Insights

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

The PDF document is identified as malicious by an ML classifier and contains a large number of external links, many pointing to other PDF files, indicative of a link farm. The document body, though heavily obfuscated, contains a URL that appears to be a lure for downloading a driver, suggesting a social engineering tactic to trick users into downloading malware. The presence of numerous PDF links further supports the attack pattern of distributing malicious files.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://camsbookkeeping.com/uploads/1/3/0/7/130740477/130740477.html#driver+bematech+mp-+2800+th
    • http://glaciervillagejuneau.com/uploads/1/3/1/4/131437423/7873855.pdf
    • http://flossythings.com/uploads/1/3/1/3/131380058/40c5e000e7.pdf
    • http://photographicspectrum.com/uploads/1/3/0/9/130969573/wusijulula_dugunopixibodit_putekinomo_parix.pdf
    • http://legacyhomesin.com/uploads/1/3/0/9/130969656/6486182.pdf
    • http://alaskancruisetransfer.com/uploads/1/3/0/5/130540033/temomutixaturobilobu.pdf
    • http://katetargett.com/uploads/1/3/0/6/130639452/gezomamigikaj_ramabize_pavefipedizu.pdf
    • http://gjkconstructionconsultants.com/uploads/1/3/0/8/130814066/videkop.pdf
    • http://sdrvowners.org/uploads/1/3/1/4/131437977/kivan-gikejodakodit-pexufagizezapuj.pdf
    • http://shelliejacobs.com/uploads/1/3/1/4/131409909/dowosedisexolima.pdf
    • http://pcgroup365.com/uploads/1/3/0/6/130620868/gijogalituwixave.pdf
    • http://yourbestlifestylist.com/uploads/1/3/0/2/130291030/lirafeza.pdf
    • http://alaskancruisetransfer.com/uploads/1/3/0/5/130540033/temomutixaturobilo
    • 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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006ab9.bin
8e9b276e8031b3374e297f24bebd588eca127550a69db2e4c0f63d63288ccb46		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AB9 9608 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.