Malicious PDF — malware analysis report

Static analysis result for SHA-256 a200b4b40cf890dc…

MALICIOUS

PDF

42.1 KB Created: 2020-05-13 13:22:00 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: d0b4e6bd4e35352a7345cf8704df38d1 SHA-1: 904041b5d2125e62168f35bca904905fe69d9ef7 SHA-256: a200b4b40cf890dc2d10758b90103bfa206b169f45edcc7997804b94bdf84be2
94 Risk Score

Malware Insights

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

The PDF document contains a lure related to a "hack mod apk" and exhibits a link farm behavior, pointing to numerous external PDF files. The ML classifier strongly indicated maliciousness, and the presence of a large number of external links suggests an attempt to distribute further malicious content or engage in SEO abuse for malicious purposes.

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://avabaycompany.com/uploads/1/3/1/3/131380433/131380433.html#angry+birds+season+hack+mod+apk
    • http://holdempreciousmetals.net/uploads/1/3/1/0/131070590/c823951d.pdf
    • http://medowieservicecentre.com/uploads/1/3/0/6/130603907/3550371.pdf
    • http://websters.space/uploads/1/3/1/3/131384613/lezapapad.pdf
    • http://edmontonhomestagingpro.ca/uploads/1/3/1/4/131452893/8de5f0c4b7eb775.pdf
    • http://somersetraleigh.com/uploads/1/3/0/6/130603918/waxerokireburik.pdf
    • http://christoskaielina.com/uploads/1/3/0/4/130488228/bc058a.pdf
    • http://senlandream.com/uploads/1/3/0/6/130603793/tidudoximo-tilajuremot.pdf
    • http://montrealcannabiscup.com/uploads/1/3/0/8/130813366/setebakusi_jazekifix.pdf
    • http://tcconsulting.org/uploads/1/3/1/3/131398003/jivubetenaxadirafi.pdf
    • http://craftybeeshomestead.com/uploads/1/3/1/3/131384383/todoxelinem.pdf
    • http://jennydamatta.com/uploads/1/3/0/6/130604446/8883a1a4.pdf
    • http://greaterthancreative.com/uploads/1/3/0/5/130588905/dobapalotekeb.pdf
    • http://charitythreads.com/uploads/1/3/0/7/130739879/bikagit_xolewopokovogi_xatenus.pdf
    • http://inkabhp.com/uploads/1/3/1/4/131452836/wutonejak-pigonorojenal-wetirinomogavi.pdf
    • http://idlewildonline.com/uploads/1/3/0/6/130640090/vapowowoxibefeb-bojimazuvi-rezogexuzes-fogav.pdf
    • http://arch-craft.com/uploads/1/3/0/2/130291355/luvotawe-nekudoba-kiduvofamuzi.pdf
    • http://celebr8dj.com/uploads/1/3/0/6/130605166/pudejo.pdf
    • http://blackunicornbeauty.com/uploads/1/3/0/9/130969829/difukupivubu.pdf
    • http://activito.net/uploads/1/3/0/8/130814353/bafuz_papewuf_nafosojo_jokelise.pdf
    • http://eabusinesssolutions.com/uploads/1/3/0/4/130436354/9032398.pdf
    • http://cptsd-healing.com/uploads/1/3/0/6/130604910/7762916.pdf
    • http://watchill.net/uploads/1/3/0/8/130815140/rakuv.pdf
    • http://sannicholasevents.com/uploads/1/3/1/8/131857590/806c6.pdf
    • http://funkythaiexports.com/uploads/1/3/0/4/130436125/zaloxaxubuwamif-dejibe-gamuro.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_off0000786b.bin
c15efde6b83c0a71984eb5270979779dee2b1e52741f2019be7c469dbe135307		 pdf-font-stream PDF embedded font (sfnt) at offset 0x786B 10576 bytes

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