Malicious PDF — malware analysis report

Static analysis result for SHA-256 3635202b8fc90e4b…

MALICIOUS

PDF

43.1 KB Created: 2020-05-20 00:43:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 29270d5fd270846c46780878e5149b33 SHA-1: 552e6e86bee5ecaf1931c0e0dcbcb56979d86c56 SHA-256: 3635202b8fc90e4bc192a8d7e0f6fd8d77f732fe2cd2ca678ec7327845e335bb
96 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or SEO spam campaign. The ML classifier also strongly indicated maliciousness. The document body contains a URL that is also present in the extracted URLs, indicating a potential lure to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://inlandcbd.com/uploads/1/3/0/8/130873962/130873962.html#chim+bim+bip+moi+mp3
    • http://mystparanormal.com/uploads/1/3/0/6/130620364/5cf58b7.pdf
    • http://geekedoutgaming.com/uploads/1/3/0/8/130873923/lipag.pdf
    • http://kate-hawker.com/uploads/1/3/0/6/130621809/tinoxu.pdf
    • http://oldfashionedsoap.com/uploads/1/3/0/2/130289460/987148.pdf
    • http://charmingtwigcrafts.com/uploads/1/3/0/2/130271087/zujazu.pdf
    • http://sweetandsavourygourmet.com/uploads/1/3/1/6/131606227/jexof.pdf
    • http://breathofautumncounseling.org/uploads/1/3/1/4/131438741/f53d4cce363.pdf
    • http://lisaben.org/uploads/1/3/0/7/130776500/ragepebof.pdf
    • http://paylesscleaners.org/uploads/1/3/0/6/130603946/jotolojijalo.pdf
    • http://eco-revolution.net/uploads/1/3/0/2/130270923/3467ee8d48.pdf
    • http://agavejax.com/uploads/1/3/0/7/130775186/pudikipipavafij-dixilikela.pdf
    • http://paoneplumbing.com/uploads/1/3/1/4/131437981/922269.pdf
    • http://bigcitystrangers.com/uploads/1/3/1/8/131857120/231158.pdf
    • http://leoandfinch.com/uploads/1/3/0/6/130622027/2feac837b.pdf
    • http://smilyface.org/uploads/1/3/0/6/130639140/xujuwidofuviz_papim.pdf
    • http://winterharbormusicfestival.org/uploads/1/3/0/6/130640182/54737ba7cb7303.pdf
    • http://lorenkeithjordan.com/uploads/1/3/0/4/130477455/3262554.pdf
    • http://veganshoppingaustralia.net/uploads/1/3/0/5/130543239/rorezonudaxe.pdf
    • http://testdomainformarketplace.club/uploads/1/3/1/0/131069910/268540286.pdf
    • http://b-meclub.org/uploads/1/3/1/4/131453255/1922004.pdf
    • http://infinitebeauty.nz/uploads/1/3/0/8/130873840/2800613.pdf
    • http://mampad.com/uploads/1/3/0/6/130604984/wivejozubox.pdf
    • http://onsightcoffee.com/uploads/1/3/1/4/131437765/8b4b45.pdf
    • http://pricetranslations.com/uploads/1/3/0/3/130323145/tonezivol.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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000070ec.bin
99abd5451fc634bd1dc70b83a06725f2007c91e934a90549166d516a4a51de7d
pdf-font-stream PDF embedded font (sfnt) at offset 0x70EC 21204 bytes