Malicious PDF — malware analysis report

Static analysis result for SHA-256 f032d13ec75c251a…

MALICIOUS

PDF

53.4 KB Created: 2020-03-30 14:27:21 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 557a2511971cf72e51604085f24a775e SHA-1: 16eb1fc6cdac9ae2e3f72d315ed32f0a2a1d4795 SHA-256: f032d13ec75c251a2daf6308f7443c21368aa26293abc5236d443c2ec4ec03a6
70 Risk Score

Malware Insights

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

The PDF contains a large number of external links, indicating a link farm or SEO poisoning tactic designed to direct users to malicious content. The heuristic 'PDF_SEO_LINK_FARM' strongly suggests this malicious intent. The presence of a 'SE_DOWNLOAD_BUTTON' heuristic further supports the idea that the document is designed to trick users into clicking links. No scripts were extracted from this sample.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://colddiamnd.com/uploads/1/3/0/6/130603958/130603958.html#basic+korean+language+learning+pdf
    • http://animalpicturebooks.com/uploads/1/3/0/5/130547527/repivunijeni.pdf
    • http://microray.us/uploads/1/3/0/7/130740262/zufopopofa.pdf
    • http://chinamininggroup.com/uploads/1/3/0/6/130605253/5052143.pdf
    • http://innersights.info/uploads/1/3/0/6/130620449/956c67.pdf
    • http://susanne-kessler.net/uploads/1/3/0/2/130273623/vidow.pdf
    • http://southwesterntennisservices.com/uploads/1/3/0/6/130604693/rifesizapedezoj_gonapajenatati.pdf
    • http://knowlio.com/uploads/1/3/0/6/130620854/d11f2edd.pdf
    • http://saginawgolds.com/uploads/1/3/0/5/130550708/9020990.pdf
    • http://ouachitavacation.com/uploads/1/3/0/4/130436068/pagedutejoxagaziki.pdf
    • http://addybeaux.com/uploads/1/3/0/3/130313434/kazafatir.pdf
    • http://oaklandincubated.com/uploads/1/3/0/5/130551257/3487141.pdf
    • http://midcountydentalcare.com/uploads/1/3/0/7/130740092/taferoxit-govebatorixesam.pdf
    • http://itslearningsupport.com/uploads/1/3/0/6/130604083/vegolaga.pdf
    • http://fishevodevogeno.org/uploads/1/3/0/6/130604287/gugarevibu.pdf
    • http://great-rock.com/uploads/1/3/1/3/131380521/toberazeki.pdf
    • http://thatsnotwhatiordered.site/uploads/1/3/0/8/130874305/4d2a7494569d0.pdf
    • http://sunderlandhandyman.com/uploads/1/3/1/3/131378990/a89632a48f5.pdf
    • http://lavitecassistencia.com/uploads/1/3/0/3/130323571/zewuwukusanaruxeven.pdf
    • http://wklogisticsllc.com/uploads/1/3/0/2/130270921/xidazumog.pdf
    • http://dcchosa.com/uploads/1/3/1/1/131163653/f911887ff1b.pdf
    • http://mcguireenglish.com/uploads/1/3/0/6/130604152/5b505b7dbafbee7.pdf
    • http://krasser-andreas.com/uploads/1/3/0/2/130288962/jopuwexovokomosuret.pdf
    • http://sowmyapelluru.com/uploads/1/3/0/5/130540366/zesudevuvufuxedig.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007d4f.bin
e6bd68f5418e6956e86f64a7861c062b002929ce8ffb4afa99b9defc196b564e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D4F 8524 bytes
font_01_sfnt_off00009e00.bin
573bfa77f12d8bcb2b22d36ee3fee98c415bf951da98cae4f1ffee223afb05fb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9E00 6108 bytes
font_02_sfnt_off0000b1db.bin
50dc865112b31b8628c9170d82daeefa18b8227744a71909c0440548ffdcd4ea		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB1DB 16132 bytes

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