Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb8a623d2439091d…

MALICIOUS

PDF

46.5 KB Created: 2020-03-07 19:49:37 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: b639b52f1dd6accad7d31434005f8f1a SHA-1: c7d8180c316f1c684a2f8c64e6deeddeeb21492e SHA-256: cb8a623d2439091d2abe100896f187c4c218a76cb38c32390b2b0ddb47c5a1fc
70 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 User Execution: Malicious File

The PDF file contains a large number of external links, many pointing to other PDF files hosted on similar domains. This suggests a link farm or SEO poisoning tactic designed to drive traffic to potentially malicious content. The presence of a 'download button' heuristic further supports the idea that the document is intended to trick users into navigating to these external resources. 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://insureapplewatch.com/uploads/1/3/0/5/130551907/130551907.html#ayyappa+songs+old+telugu+lo
    • http://redalertemergencycards.com/uploads/1/3/0/5/130545199/pofabadazod.pdf
    • http://pilgrimvoyage.com/uploads/1/3/0/5/130539155/pusitikisop-girixosexer-wilovifivebe-subosumate.pdf
    • http://mrspiacentini.com/uploads/1/3/0/7/130776519/2cc6a04.pdf
    • http://newadpix.com/uploads/1/3/0/7/130739695/b13e68958b.pdf
    • http://pcchristianradioevents.com/uploads/1/3/0/5/130589047/2193826.pdf
    • http://www.greendreamteamokanagan.com/uploads/1/3/0/7/130739779/wadomepofinije.pdf
    • http://espirituoso.com/uploads/1/3/0/4/130435787/jamaruxepo.pdf
    • http://my-versatile.com/uploads/1/3/0/6/130620755/pelerovef.pdf
    • http://mairu-tabi-bonbigirl.com/uploads/1/3/0/5/130589159/kanesarefufoz.pdf
    • http://polarclad.com.au/uploads/1/3/0/5/130543979/mebojolelukerup.pdf
    • http://mostlymeh.com/uploads/1/3/0/5/130551567/7107235.pdf
    • http://blogalytix.com/uploads/1/3/0/7/130739180/f8f738fc.pdf
    • http://kichesepies.com/uploads/1/3/0/7/130739852/3a7581f41.pdf
    • http://www.digitalmultimeter.ch/uploads/1/3/0/2/130272319/tunefikevuja-wojado-rediv-xivepegerifaxuk.pdf
    • http://path-to-wellness-llc.com/uploads/1/3/0/7/130738591/18a6402bf122.pdf
    • http://ejunkie.us/uploads/1/3/0/8/130874019/zonafatojimabox.pdf
    • http://rotoruayachting.club/uploads/1/3/0/5/130588803/bominidadef-xozililisa-manadutejuwil-gezelimugexazuf.pdf
    • http://linnellfamilyfarm.com/uploads/1/3/0/3/130379482/034ed.pdf
    • http://www.kurtandterry.com/uploads/1/3/0/7/130738984/deziximebidikek.pdf
    • http://newresume2019.com/uploads/1/3/0/4/130483184/pizano-sururibub-xubimij-likimedujij.pdf
    • http://connectivityusa.net/uploads/1/3/0/2/130273571/mofasonusowetumuk.pdf
    • http://www.jedparkerdigitalartifact.com/uploads/1/3/0/7/130738578/8830028.pdf
    • http://webmail.prettynpoised.com/uploads/1/3/0/6/130620370/novapuguvokena.pdf
    • http://silverbulletgunworks.com/uploads/1/3/0/8/130814513/pavabod-zefunew-lekuzakewim.pdf
    • http://webmail.prettynpoised.com/uploads/1/3/0/6/130620370/n
    • 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_off0000768d.bin
d448729db8a39462ed77a8a3d9946bf0382e3d41a127fdadb72d1e3c0d379cce		 pdf-font-stream PDF embedded font (sfnt) at offset 0x768D 9364 bytes
font_01_sfnt_off000096f6.bin
bb65e153df78154bfd14470754e87ba03df7715f8d52849d071c5334056f3476		 pdf-font-stream PDF embedded font (sfnt) at offset 0x96F6 16096 bytes

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