Malicious PDF — malware analysis report

Static analysis result for SHA-256 498e52da412670c2…

MALICIOUS

PDF

68.9 KB Created: 2020-05-06 09:17:55 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 945e23cec3091dcd1dab809a1e5a2abe SHA-1: ed2f2f2c8dfee9da06748e6e6f289dbbbd50924b SHA-256: 498e52da412670c22b0dc3d5b517833d3e1b18ef7f0fdd290ccedebd11fa62c7
62 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 point to PDF files with numeric slugs, indicative of a link farm. The document body and extracted URLs suggest a lure for downloading pirated software via torrents. No scripts were extracted from this sample, limiting the ability to determine further malicious actions.

Heuristics 3

  • 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
  • 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://multistreams.com/uploads/1/3/0/2/130289565/130289565.html#baixar+jogos+para+pc++utorrent
    • http://fightingchancepdx.org/uploads/1/3/0/3/130313414/sifaxolutisaz.pdf
    • http://copperquartercampground.com/uploads/1/3/0/7/130776241/jalobiwe.pdf
    • http://washingtonstatehealthadvocates.com/uploads/1/3/0/5/130588294/fe1d95a56683.pdf
    • http://falkenworxs.com/uploads/1/3/0/5/130590209/tefil.pdf
    • http://golattice.org/uploads/1/3/0/7/130775341/nopewugeruv.pdf
    • http://causefunding.co/uploads/1/3/0/8/130873943/1516c1e84d.pdf
    • http://eastbaypsychotherapycollaborative.org/uploads/1/3/0/6/130621267/4178879.pdf
    • http://crossfoodbank.org/uploads/1/3/0/3/130323516/8765405.pdf
    • http://theamacabrehistory.com/uploads/1/3/0/5/130550756/nipumopaxanonurog.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • 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_off0000d467.bin
3f6ccc0a128aa0743a5742e4a8243dd037268fb334edf5453e3c93643d9577c8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD467 3220 bytes
font_01_sfnt_off0000dfc0.bin
69f7b1d7f76c6761242e1df9a2cdacfaed02f90b47fe89bea9ba35e5964297f8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDFC0 11964 bytes

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