PDF malware analysis — malicious · 9d3d2361771f4bf0

MALICIOUS

PDF

44.3 KB Created: 2020-04-11 10:48:04 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)

MD5: e78473ea467afb24b9493415abf8b542 SHA-1: 10090e736815c60e48944d9367f81059404d21e1 SHA-256: 9d3d2361771f4bf097b8888f6930bd551731d8d6880fc1521f3f8779066a190d

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

This PDF file was flagged by a machine learning classifier as malicious. It contains a large number of external links, many pointing to PDFs with numeric slugs, suggesting a link farm or SEO abuse tactic. One of the primary external links, http://spiritualdirectionminstry.com/uploads/1/3/0/8/130813888/130813888.html#led+driver+plug, indicates a lure related to a 'Led driver plug' to direct users to potentially malicious content.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

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.
External URI info PDF_URI

PDF contains an external URL action
Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL

The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
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://spiritualdirectionminstry.com/uploads/1/3/0/8/130813888/130813888.html#led+driver+plug
- http://onejohnfive.com/uploads/1/3/0/9/130969922/nupex_luzusowimiwalo.pdf
- http://saletacoma.com/uploads/1/3/0/5/130543588/4bf9c0b.pdf
- http://kcindustries.net/uploads/1/3/0/6/130604281/9760868.pdf
- http://vegascitywidemovers.com/uploads/1/3/0/2/130287997/b93bfdf688.pdf
- http://premoilcorp.com/uploads/1/3/0/8/130874299/3603347.pdf
- http://bmwalkerenterprises.com/uploads/1/3/0/6/130640046/8302302.pdf
- http://wowstudentcouncil.com/uploads/1/3/1/3/131384185/wazazulez-gabevaxu.pdf
- http://backtopulse.com/uploads/1/3/0/2/130271121/8a5d16bec8ea9.pdf
- http://misscyrarteacher.ca/uploads/1/3/0/8/130874299/7262697.pdf
- http://lostandliving.com/uploads/1/3/0/6/130604521/jitatamogab-pujodujumu.pdf
- http://mountain-ammo.com/uploads/1/3/0/8/130874123/loxiweta_libazesubovuwol_kotomafe.pdf
- http://ocpoolinspector.com/uploads/1/3/0/2/130289476/kalepivural.pdf
- http://losangelespersonalshoppers.com/uploads/1/3/0/5/130540437/tagopusopupemixofomi.pdf
- http://discoveryelectricbikes.com/uploads/1/3/0/6/130621276/jadufo-xejepegufaxuw-pawejavavasari.pdf
- http://lovehouse.org/uploads/1/3/1/3/131398159/8014673.pdf
- http://mountain-ammo.com/uploads/1/3/0/8/130874123/loxiweta_liba
- 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.

Filename	Kind	Source	Size
`font_00_sfnt_off0000781d.bin` `a435579ddc32b24c8e9d0176857d7808bbd2dc36f86f5bc04e8271979d434b95`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x781D	9120 bytes
`font_01_sfnt_off00009ae3.bin` `cfb3357b20fb01955c1e4a0ed568c791e3a97db8f0fbaa18432a833eaa1d19da`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9AE3	2828 bytes

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