Malicious PDF — malware analysis report

Static analysis result for SHA-256 496837b146f33623…

MALICIOUS

PDF

43.4 KB Created: 2020-04-05 02:55:05 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 41f6658750d2c48f5604ae223c445cab SHA-1: eaa269ecb8945e6d8a7bce67ec0f524e0f2f43c6 SHA-256: 496837b146f336234e3e82c19778e4b75f01a427cfeae8a237b5d7d9eaeda017
62 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded external links, a common technique for SEO poisoning or redirecting users to malicious sites. The document body text, though partially corrupted, includes a query about 'ipconfig /flushdns' and references the wkhtmltopdf tool, suggesting a lure to a potentially harmful website. 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://mandalasail.com/uploads/1/3/0/4/130483213/130483213.html#que+es+el+ipconfig+%2Fflushdns
    • http://yogantraining.com/uploads/1/3/0/5/130589452/dajidowijegi-vebuxi.pdf
    • http://ww.maryslittlegems.com/uploads/1/3/0/7/130776760/kowidigojok.pdf
    • http://honeybearorchards.com/uploads/1/3/0/8/130814190/mepenizu.pdf
    • http://lisakahlowgallery.com/uploads/1/3/0/6/130604601/6416415.pdf
    • http://mybestfriendsartgallery.com/uploads/1/3/0/7/130739956/7068886.pdf
    • http://lehighvalleybarbell.com/uploads/1/3/1/4/131438228/5773741.pdf
    • http://elitesolarllc.net/uploads/1/3/1/4/131406288/bubunipaxa.pdf
    • http://rogerspma.com/uploads/1/3/0/6/130621367/gazonomezamadivojuz.pdf
    • http://zealgum.com/uploads/1/3/0/4/130488964/4563936.pdf
    • http://ayanaartistry.com/uploads/1/3/0/5/130588805/nudenokidogizone.pdf
    • http://allworkdayresourcing.com/uploads/1/3/0/5/130589054/89e108b2.pdf
    • http://tempohousingnz.com/uploads/1/3/0/8/130874641/afb873e327549.pdf
    • http://fvgma.com/uploads/1/3/0/6/130639916/zisewu-roduwe.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_off00006ac2.bin
5231f51e0c62eaf82b7afde1153104a6ad633f43c7cbedcc7062e1e7fa8012d1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AC2 9040 bytes
font_01_sfnt_off00008b9c.bin
d65752e558a9090157c9a1b02647c04d2680198cf9d52ff42939ef8ccbf7fabd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B9C 16084 bytes

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