Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb73a3ba37d03785…

MALICIOUS

PDF

50.6 KB Created: 2020-04-10 08:03:52 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 4aa0bfe354fc64beea94126086be149c SHA-1: b58f20871671109b8600ce7242f09f27fd6f5ca1 SHA-256: eb73a3ba37d03785ee0a852a9461c52c60e39bd0770401d334d4a20655b8344e
62 Risk Score

Malware Insights

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

The PDF document employs a lure of a free book download to entice users. It contains a significant number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various PDF files hosted on different domains. This suggests a link farm or distribution mechanism for further malicious content. No scripts were extracted from this sample.

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://lashblab.com/uploads/1/3/1/0/131070071/131070071.html#wayne+grudem+systematic+theology+free+download
    • http://yaraandoo.info/uploads/1/3/1/3/131398324/1893379.pdf
    • http://abigailsparksvisualart.com/uploads/1/3/0/4/130435956/govumu.pdf
    • http://bruno.legal/uploads/1/3/0/3/130379549/8995509.pdf
    • http://meaganmalone.com/uploads/1/3/1/4/131455232/fetupedu.pdf
    • http://franartist.com/uploads/1/3/0/6/130621060/wejim.pdf
    • http://clogging101.com/uploads/1/3/0/3/130313809/kejilus.pdf
    • http://tailfeatherswings.com/uploads/1/3/1/1/131164198/5297735.pdf
    • http://amazepropertiesofmi.com/uploads/1/3/1/4/131438563/5436346.pdf
    • http://lorlarsen.com/uploads/1/3/1/4/131409017/b48c04f.pdf
    • http://toledomarineservice.com/uploads/1/3/0/4/130478868/tijiwazivegovu_makatoja_jitesuve_doxixutuxugim.pdf
    • http://innovativecounselingservices.net/uploads/1/3/0/5/130550898/jelawudesava-todijebonan-wutozudo.pdf
    • http://radjam.net/uploads/1/3/0/8/130874300/3329793.pdf
    • http://hawkeyegamedesign.com/uploads/1/3/0/6/130604903/9808704.pdf
    • http://jeanhaleyart.com/uploads/1/3/0/6/130621509/97c8b0f.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006cbd.bin
0ca2277949c343cba793ae85e72c7287288eec02f9e646acb408aec2bef24373		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CBD 8256 bytes
font_01_sfnt_off00008c7b.bin
beb27d1f1815a7ce6b8569c591a247684861a3257630df3b368faf56f59ca8f0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8C7B 2636 bytes
font_02_sfnt_off000095c4.bin
b8d25675fc030d92b24a06d7f54236cc2ed5fcda5458af208fb78c892415f154		 pdf-font-stream PDF embedded font (sfnt) at offset 0x95C4 3972 bytes
font_03_sfnt_off0000a422.bin
2461ddaaf9152b41882cdc78a1f77234db812efa80a0ba6c918ee4a7bd445345		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA422 16296 bytes

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