Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ac044f27668b878…

MALICIOUS

PDF

45.2 KB Created: 2020-03-10 01:47:08 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 4d84ad87b62571359a2ddd1962fa37c4 SHA-1: bf73b3116b63764e96181df79c015eece2cd1772 SHA-256: 1ac044f27668b878cb873c743bd6647d76f1f51c3e8b188135c4032a8fc73b56
70 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which point to other PDF files hosted on various domains. This behavior is indicative of a link farm or SEO manipulation tactic, potentially used to distribute malicious content or improve search engine rankings for harmful sites. The presence of a 'download button' lure further suggests an attempt to trick users into interacting with these links. No scripts were extracted, limiting the analysis of direct payload execution.

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://pencilpenservices.com/uploads/1/3/0/7/130739893/130739893.html#sociology+mahapatra+sir+notes
    • http://producer4hire.com/uploads/1/3/0/2/130270974/1bcaf0.pdf
    • http://surge-design.com/uploads/1/3/0/6/130639628/541093.pdf
    • http://myboomx.com/uploads/1/3/0/4/130490151/d0d28.pdf
    • http://helpgarret.life/uploads/1/3/0/6/130605278/vukepuw.pdf
    • http://satellitesessionsmusic.com.au/uploads/1/3/0/5/130589389/6890466.pdf
    • http://villannabella.com/uploads/1/3/0/8/130874317/7ae11924906a1e.pdf
    • http://greatlakesspine.com/uploads/1/3/0/2/130271126/geriked.pdf
    • http://rocksolidskilltraining.com/uploads/1/3/0/4/130435611/kukowumebom.pdf
    • http://panicroomrichmond.com/uploads/1/3/0/4/130435757/9180699.pdf
    • http://electriclawnusa.com/uploads/1/3/0/5/130590257/fetinasum-doxetusijixon-wiganoboxixa-rurizokale.pdf
    • http://gerecconsulting.com/uploads/1/3/0/2/130289457/a1de25b.pdf
    • http://hungrymondays.com.au/uploads/1/3/0/7/130776741/709f3.pdf
    • http://soloporque.org/uploads/1/3/0/4/130476513/dedoluwev.pdf
    • http://hostmaster.lafornace.co.uk/uploads/1/3/0/8/130813136/bufizozagatutozoj.pdf
    • http://bigdsratsnest.com/uploads/1/3/0/6/130639755/14a35be09638873.pdf
    • http://bestofthemenu.com/uploads/1/3/0/7/130776159/wifuwe.pdf
    • http://mail.jaguerzon.com/uploads/1/3/0/5/130541402/f32289909e8155.pdf
    • http://getgreenslowly.org/uploads/1/3/0/3/130312937/sirewutuvoturew.pdf
    • http://blueegg.net/uploads/1/3/0/5/130547576/nogepupodalib.pdf
    • http://clearmarkclickertraining.com/uploads/1/3/0/7/130738894/b056844.pdf
    • http://thephibbsteam.com/uploads/1/3/0/5/130588850/bujaneradapux_julujese_gijawig.pdf
    • http://midlandsallstar.com/uploads/1/3/0/7/130739037/dirazufuj_jeden_sobono_tetimovalidives.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007068.bin
cc650a3e526f4eea26bc083ee1b0d497636b2670da12dbb79c06acad5d543ea7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7068 8544 bytes
font_01_sfnt_off0000911b.bin
32b54217619f9438721b423dc2f4f4da0f78781b0811ea49af2be6b0310ecf56		 pdf-font-stream PDF embedded font (sfnt) at offset 0x911B 16164 bytes

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