Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ab7d9ca0560ae02…

MALICIOUS

PDF

35.4 KB Created: 2020-03-16 14:41:51 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 12d9ce88150a6b1641e44912fbb3dd56 SHA-1: b65432ddce0abe5c49e31999e4f94d3a718a1a76 SHA-256: 6ab7d9ca0560ae026fbc6ddcba5391e3c6756f172aa772aa98c8b6c4ec1d7e39
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of external links, many of which point to other PDF files hosted on various domains. This behavior is indicative of a link farm or a mechanism to distribute malicious content or redirect users to phishing sites. The ML classifier strongly supports the malicious nature of this file.

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://77yhi.bpmtc.com/uploads/1/3/0/7/130740483/130740483.html#formula+de+la+razon+progresion+geometrica
    • http://morrisseauartist.com/uploads/1/3/0/2/130274322/runadoba-zugilunevezefor-midoburodo-lubobelapirugi.pdf
    • http://joycare.co.za/uploads/1/3/0/5/130547515/2064772.pdf
    • http://tegprogramming.com/uploads/1/3/0/7/130740196/78abcd32.pdf
    • http://akademikreatifindonesia.com/uploads/1/3/0/2/130287514/xepejonad_kisegajamap.pdf
    • http://pordenone.rocks/uploads/1/3/0/7/130738812/giwotogiferakek-gubero.pdf
    • http://eccevideos.com/uploads/1/3/0/6/130620228/bf86891614.pdf
    • http://randomthoughtsnlotsacoffee.com/uploads/1/3/0/5/130546432/tasobariva_kovowu_jifetif.pdf
    • http://savesexpress.com/uploads/1/3/0/8/130874497/fugirot.pdf
    • http://www.mackntbeats.com/uploads/1/3/0/5/130542965/b7141c8bab.pdf
    • http://www.laurajentertainment.com/uploads/1/3/0/5/130543772/9364090.pdf
    • http://mail.southhighlands.com/uploads/1/3/0/2/130288811/reresixet.pdf
    • http://constellationentertainment.com/uploads/1/3/0/7/130776821/4023891.pdf
    • http://dualfoods.com/uploads/1/3/0/9/130969455/netupamotif-fobunawojojo.pdf
    • http://fortmojavesolarprojecteis.com/uploads/1/3/0/5/130588744/kivafivitodewa-ramixanikafov.pdf
    • http://karinstyling.nl/uploads/1/3/0/5/130543156/e4dbc74a8f3b.pdf
    • http://autodiscover.raumanratsastuskeskus.net/uploads/1/3/0/2/130270956/2087081.pdf
    • http://www.spanish1withmravila.com/uploads/1/3/0/5/130543543/170153.pdf
    • http://www.gotkeystudio.com/uploads/1/3/0/5/130588295/luzidunipezorir_wakupozipurusef_wawopos.pdf
    • http://cleverchange.org/uploads/1/3/0/7/130740129/53043c0cd.pdf
    • http://firstmam.com/uploads/1/3/0/5/130551192/80c92b.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_off0000613a.bin
27090a9f1892c5d6ab2dd3601c475271a16cce418558a35a4259bcb9c729ae44		 pdf-font-stream PDF embedded font (sfnt) at offset 0x613A 7872 bytes

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