Malicious PDF — malware analysis report

Static analysis result for SHA-256 07a4ace13273319c…

MALICIOUS

PDF

39.8 KB Created: 2020-03-25 04:45:30 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: ad4417ccfff3d6e68edb8fc87a56242e SHA-1: cb38b67fe62f90df91c8f4ce4f787d4f896e1f74 SHA-256: 07a4ace13273319cc717615fe3da4d4c48aa0891a0af9bea6c915c32906c6505
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1105 Ingress Tool Transfer

The PDF contains a large number of external links to various domains, identified as a PDF link farm. The primary purpose appears to be directing users to these external resources, which are likely malicious or used for SEO spam. No scripts were extracted, but the sheer volume of outbound links suggests a malicious intent to redirect users to potentially harmful 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://65bancker.com/uploads/1/3/1/1/131163734/131163734.html#palabras+con+mb+juntas+en+espa%C3%B1ol
    • http://countreeside.co/uploads/1/3/0/5/130588942/9508429.pdf
    • http://brownsvillese92.com/uploads/1/3/0/4/130476244/ziramateralad-laxowezatuj-gadasuriba-nomapojin.pdf
    • http://technologybear.com/uploads/1/3/0/6/130639241/fafaxamolosun.pdf
    • http://kidneyrecipes.net/uploads/1/3/0/4/130488429/2601019.pdf
    • http://mta-sts.mail.cakegamingtv.com/uploads/1/3/0/3/130379151/d8e7eab0.pdf
    • http://thethreesh.com/uploads/1/3/0/2/130270958/4461959.pdf
    • http://musesamongus.com/uploads/1/3/0/8/130873841/pojenokoj.pdf
    • http://blueoceanconsulting.xyz/uploads/1/3/0/7/130775001/629d2434a23c4e2.pdf
    • http://themarriagecoach.com/uploads/1/3/0/6/130620940/181195.pdf
    • http://m.statixhair.com/uploads/1/3/0/4/130478772/825054.pdf
    • http://puntodeapoyo.es/uploads/1/3/0/3/130379291/losodeguwurepuro.pdf
    • http://livingstonelifecounters.com/uploads/1/3/0/7/130775029/5478928.pdf
    • http://www.andyharrisasblacksheep.com/uploads/1/3/0/8/130814120/gavajaf_xagemilavepepov_vulotomelid.pdf
    • http://jamesradack.net/uploads/1/3/0/2/130270971/rutavej.pdf
    • http://cwfmarketing.com/uploads/1/3/0/2/130288682/weretap.pdf
    • http://nedsykil.store/uploads/1/3/0/7/130740320/xopatetukob_voxenusiji_regosekipo_dofamekesuzanep.pdf
    • http://glichtental.net/uploads/1/3/0/7/130739198/fubuvamevobut.pdf
    • http://unicorninvestmentsgroup.com/uploads/1/3/0/5/130588360/5861240.pdf
    • http://www.activestockselection.com/uploads/1/3/0/3/130313612/8550231.pdf
    • http://sclandscapingservices.com/uploads/1/3/0/4/130435721/f97b6b3c.pdf
    • http://ip111-colo.mnemonix.com/uploads/1/3/0/5/130551477/ee3743a17.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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006edd.bin
5bdea0a2c1f2cf96f689b7434173053444c8d2b555f9d6e174808d606a830c6c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EDD 9072 bytes

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