Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d50a62dfae6392b…

MALICIOUS

PDF

38.4 KB Created: 2020-04-08 18:57:47 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 2cec76a136589b05e77756138fc6f0f6 SHA-1: 691976084d133a9beeb581daab9ec3cf1f41b6d2 SHA-256: 4d50a62dfae6392bd6d7f6906b188060e45f5dc3ea60e04d747ecc8607f63623
94 Risk Score

Malware Insights

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

The PDF document is designed as a lure, using the title 'Juego de tronos torrent latino' to entice users to click on numerous embedded links. These links, such as http://curatethenight.com/uploads/1/3/0/4/130476910/130476910.html#juego+de+tronos+torrent+latino and http://emmalinelucillephotography.com/uploads/1/3/0/4/130435685/giziv.pdf, likely lead to malicious websites or further malware downloads. The ML classifier strongly supports the malicious nature of this PDF.

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://curatethenight.com/uploads/1/3/0/4/130476910/130476910.html#juego+de+tronos+torrent+latino
    • http://emmalinelucillephotography.com/uploads/1/3/0/4/130435685/giziv.pdf
    • http://onthemap.rocks/uploads/1/3/0/2/130288599/merijodilubufa_katap.pdf
    • http://howtowinsuccess.com/uploads/1/3/0/7/130738850/f34434f1a165634.pdf
    • http://bodhi-tree-massage.com/uploads/1/3/0/4/130436399/66dfaa4a2c24b60.pdf
    • http://sbwd.company/uploads/1/3/0/7/130739951/190337.pdf
    • http://gooseneckstore.com/uploads/1/3/0/5/130588500/6488167.pdf
    • http://donnafitzfitlife.com/uploads/1/3/0/9/130969332/bodevekilusonit.pdf
    • http://ashaimanarts.com/uploads/1/3/0/6/130604110/9a83a.pdf
    • http://nrotcatlantamarines.org/uploads/1/3/1/3/131398212/c2aac7206.pdf
    • http://ilariamaltoni.com/uploads/1/3/0/4/130489350/ac083d9e9.pdf
    • http://mjbjacobs.com/uploads/1/3/0/7/130775510/c0104f.pdf
    • http://kaceyscloset.net/uploads/1/3/0/4/130475918/7cdac20ba.pdf
    • http://trailandhunt.com/uploads/1/3/0/6/130620412/f43d90017ff8e8e.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_off00006c3f.bin
9801ecb9322ffdfc6bc949278a5ba605b9d95fa4cd2c16db0aa148cb4871e6f7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C3F 8612 bytes

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