Malicious PDF — malware analysis report

Static analysis result for SHA-256 bda76695d0ce2a67…

MALICIOUS

PDF

42.2 KB Created: 2020-03-30 12:54:47 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 8f36e6f2db563b2805306c14f5233539 SHA-1: f5ac4902651d8839ac938e74fce235569fda2fd4 SHA-256: bda76695d0ce2a679062909e7ae13cdab2989936124b8b1a2564a44fb9c49f2f
62 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, many of which point to PDF documents on unrelated domains, suggesting a link farm or SEO spam tactic. The document body, though partially corrupted, contains text related to musical notation and PDF metadata, which serves as a lure. No scripts were extracted from this sample, and the primary malicious activity appears to be redirecting users to a large number of external sites.

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://woodlandstuition.com/uploads/1/3/1/4/131453539/131453539.html#pentagrama+musical+notas+para+piano
    • http://tanekaskyphotography.com/uploads/1/3/0/8/130874426/9868003.pdf
    • http://frozenspoon.net/uploads/1/3/0/6/130604249/jurezovaga.pdf
    • http://chesapeakebioworks.com/uploads/1/3/0/3/130323253/472111.pdf
    • http://www.dalywildlife.com/uploads/1/3/0/7/130775268/4463409.pdf
    • http://bowiepestcontrol.com/uploads/1/3/0/6/130620868/3655909.pdf
    • http://happymothersdayloveaustin.com/uploads/1/3/0/6/130621162/kotevetasug.pdf
    • http://portraitofalady.org/uploads/1/3/0/5/130551441/vijokimokevo_bareni_xemonipodu_nelojoxamil.pdf
    • http://michaelspandrio.com/uploads/1/3/1/3/131384559/gabisewa-velofodobeja-wusofu.pdf
    • http://gotoinvestors.net/uploads/1/3/0/2/130291822/2899173.pdf
    • http://mrhibbert.com/uploads/1/3/0/5/130538981/wevalomibi.pdf
    • http://kathycutshall.com/uploads/1/3/0/4/130490115/540287.pdf
    • http://legend88.net/uploads/1/3/0/6/130604769/sebaroxotoja_legabemitawom_mavigojewazo_dajiwodegokemu.pdf
    • http://labellaholisticshop.com/uploads/1/3/0/6/130605510/lavatadivuzajat.pdf
    • http://nearshoremultisports.com/uploads/1/3/0/2/130270989/8785363.pdf
    • http://nontraditionaldesign.com/uploads/1/3/0/6/130621959/817678.pdf
    • http://allstarimagination.org/uploads/1/3/0/3/130313454/dorutadufumojiruv.pdf
    • http://backrowmovietalk.com/uploads/1/3/0/7/130775607/89481.pdf
    • http://smarttvnow.com/uploads/1/3/0/6/130603810/jibimijalepig.pdf
    • http://aricaalp.com/uploads/1/3/0/7/130740166/5761015.pdf
    • http://seaworthauctions.com/uploads/1/3/0/5/130545097/4a6030af84d5d.pdf
    • http://vachiskin.org/uploads/1/3/1/0/131071082/geworotodogomelovi.pdf
    • http://tidalindustries.com/uploads/1/3/0/9/130969354/kedixeguxufok.pdf
    • http://jamesbrauer.com/uploads/1/3/0/2/130288577/2928300.pdf
    • http://crispcleaningservice.com/uploads/1/3/0/4/130435990/lipavu.pdf
    • http://marianasumerced.com/uploads/1/3/0/7/130739340/1144021.pdf
    • http://crispcleaningservice.com/uploads/1/3/0/4/130
    • 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_off00007a74.bin
3c6634c0afd929afe070d985e14e8348d24e19ede748fd42deda97e226b77bf0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A74 8380 bytes

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