Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1ce9fb5faa626b0…

MALICIOUS

PDF

32.6 KB Created: 2020-04-18 23:50:02 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 2d39a1b793574d5b08b1a5a920d5798c SHA-1: 9828bc9897c0836e89703b979cfbc107e8e3ab07 SHA-256: c1ce9fb5faa626b08d16c245da4aa5b6f8252e4b676482601b6101e5c0541bab
94 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which are hosted on domains that appear to be part of a link farm. The document body, though heavily obfuscated, contains text related to a 'weather report' and includes URLs that likely lead to malicious content or phishing pages. The ML classifier strongly indicated maliciousness, supporting the interpretation of a malicious link distribution scheme.

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://littlecuriositycorner.com/uploads/1/3/1/4/131407552/131407552.html#weather+report+this+weekend
    • http://rebeccalanningwriter.com/uploads/1/3/0/6/130604040/2d28c05f.pdf
    • http://woutertulp.nl/uploads/1/3/0/4/130476141/1206596.pdf
    • http://williamsprogramming.net/uploads/1/3/0/4/130483325/1934084.pdf
    • http://authorshannonoconnor.com/uploads/1/3/0/8/130873870/miviximoleguf-juvara.pdf
    • http://pogopossum.net/uploads/1/3/1/4/131454262/f7813e8b056705.pdf
    • http://flexource.com/uploads/1/3/0/7/130775025/6129356.pdf
    • http://bogartsdoughnuts.com/uploads/1/3/1/0/131070293/e3301af27599c8.pdf
    • http://psdalton.com/uploads/1/3/0/4/130488345/lusabi.pdf
    • http://fitnessbypamelainc.com/uploads/1/3/1/1/131163599/d62dd96498566.pdf
    • http://nurturingbabies.net/uploads/1/3/1/3/131384135/1235979.pdf
    • http://beerandliquorstore.com/uploads/1/3/1/0/131070688/5128130.pdf
    • http://nurturingbabies.net/upload
    • 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_off000057e1.bin
aeab732db3519b7978cd62f8004a728a8e87a16d7850694eb43ff6181a90b39e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57E1 7364 bytes

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