Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea1e54056e023c5e…

MALICIOUS

PDF

35.5 KB Created: 2020-03-10 09:57:34 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 323ad8799f81b908b5c82e2cfab2c973 SHA-1: c1e19098e6976e8260ecddaede3839e2f55609ab SHA-256: ea1e54056e023c5e2a06e0dbdb6c6c2ec0f165840473b46110ebb50bde91843e
94 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many of which are hosted on newly registered domains and appear to be part of a link farm. The document body, though partially corrupted, contains text related to 'Axis bank forex conversion rate' and references the wkhtmltopdf tool, suggesting a lure to a malicious website. The ML classifier strongly indicated maliciousness.

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://palladiumhotel.devsite-1.com/uploads/1/3/0/8/130874247/130874247.html#axis+bank+forex+conversion+rate
    • http://www.vogelsigns.com/uploads/1/3/0/3/130313643/vumim.pdf
    • http://mta-sts.mx.greenband.net/uploads/1/3/0/2/130273915/5687079.pdf
    • http://allshortsschoolwear.co.uk/uploads/1/3/0/4/130483808/24d41943420.pdf
    • http://www.sidewalkinteractions.net/uploads/1/3/0/7/130739878/safeker-mozof-saditet.pdf
    • http://tyrsk.com/uploads/1/3/0/8/130814672/23420610.pdf
    • http://gomosquitogreen.com/uploads/1/3/0/4/130483592/muzitikuxorogodomebo.pdf
    • http://www.pcm-healthandfitness.com/uploads/1/3/1/0/131070378/warotosadabela.pdf
    • http://clucktruckportland.com/uploads/1/3/0/5/130544898/pisaw_gakixiwawugivum_nimumoxotedite.pdf
    • http://aomenduchangyouyingqiandema.jhamrick.com/uploads/1/3/0/9/130969414/a2d254e.pdf
    • http://thetwotechs.com/uploads/1/3/0/4/130435738/166868f58815f0.pdf
    • http://birkdaleawards.com/uploads/1/3/0/6/130604499/vomuwomidalezo.pdf
    • http://roycereinecke.com/uploads/1/3/0/8/130874313/6479752.pdf
    • http://oilboomlife.com/uploads/1/3/0/6/130620232/talevemas.pdf
    • http://bfndorganics.com/uploads/1/3/0/5/130551935/2f422b10df5f.pdf
    • http://lescreationsdhemi.com/uploads/1/3/0/8/130813373/0b2e7173842.pdf
    • http://wedoopovertyreduction.com/uploads/1/3/0/6/130603936/voxogegumuzaduk.pdf
    • http://trsorgiveaways.com/uploads/1/3/0/7/130740264/3348395.pdf
    • http://artentrenous.com/uploads/1/3/0/7/130775372/031ef56c.pdf
    • http://cameraax.com/uploads/1/3/0/4/130435509/8b1e2bb36a6f4.pdf
    • http://soulstarmassage.com/uploads/1/3/0/7/130776420/wunetikugoxolob_vifagafogi_witipezedo_komefikukugi.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_off00006422.bin
32b20aba2a9685d12ad5d76fb3ea7c635f040fa9e052bef36196b951b1056cb1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6422 7220 bytes

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