Malicious PDF — malware analysis report

Static analysis result for SHA-256 42466ed9fc7538aa…

MALICIOUS

PDF

63.5 KB Created: 2020-03-28 06:13:33 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: b9b9368cbe1c53615ed06ba4a805b436 SHA-1: d9fa51f63ee3cb289a946be868e82f836a1b9061 SHA-256: 42466ed9fc7538aa4d38171c2f0e54201ff046fdbd608cab19f544143e00b618
92 Risk Score

Malware Insights

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

The PDF contains a large number of external links, as indicated by the PDF_SEO_LINK_FARM heuristic. These links point to various domains, suggesting a link farm or SEO poisoning attempt. The ML_NYX_PDF_MALICIOUS heuristic further supports the malicious nature of the document. No scripts were extracted, and the document body was heavily obfuscated, making it difficult to determine a more specific attack pattern beyond the distribution of links.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://feel-well.org/uploads/1/3/0/2/130287989/130287989.html#d
    • http://offgridhome.solutions/uploads/1/3/0/5/130546645/riwedadajun_sugagajaw.pdf
    • http://alanajanebrows.com/uploads/1/3/0/8/130814980/remizokatid-kukelorewaxamex.pdf
    • http://aligodding.com/uploads/1/3/0/7/130740356/5310808.pdf
    • http://allurebundlesandmore.com/uploads/1/3/0/5/130541600/d808dfd04b68ac.pdf
    • http://derjusa.com/uploads/1/3/0/7/130738639/takijalabox.pdf
    • http://www.prestigedetail.co.uk/uploads/1/3/0/2/130288563/fazimuluv.pdf
    • http://trashketball.us/uploads/1/3/1/1/131163760/4834501.pdf
    • http://thatcleverthing.com/uploads/1/3/0/2/130273983/kabulalawo-bumejedel-sagananabinutij-dasidusalozaf.pdf
    • http://composersoup.com/uploads/1/3/0/6/130605505/zizanawudo.pdf
    • http://christchurchportland.org/uploads/1/3/0/6/130603941/zifanorase_velovozulimed_fiviki_mivuza.pdf
    • http://hidingspace.online/uploads/1/3/0/4/130483331/7567383.pdf
    • http://ourearthlab.com.au/uploads/1/3/0/8/130813849/lobofiji.pdf
    • http://bindboard.com/uploads/1/3/0/6/130639377/72a003.pdf
    • http://soulmatesandpassports.com/uploads/1/3/1/0/131070846/fa16697ab3e0.pdf
    • http://faithfullyfitforlife.com/uploads/1/3/0/3/130323339/naboraziwive.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_off00005c70.bin
7c5e3d0c3689ad2da2edc8a9146113c6ae7624e88a31e0d36babbeee60b0e18e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C70 7948 bytes
font_01_sfnt_off00007b66.bin
883e2dd23059ee4b530cd0ff4efd9b8ef55f6b0826877a4912ef396e389a94cc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B66 29928 bytes
font_02_sfnt_off0000d928.bin
2f79ba52acca039e5c354f09c372eb8b3e5c303dfc88b98fa2ec462876c681ba		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD928 16160 bytes

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