Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab2bd3c55c558df8…

MALICIOUS

PDF

36.6 KB Created: 2020-03-17 02:38:52 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 982d847a37f9fdf0ad57619b306a7ada SHA-1: 255192297e33d1653a1cb43d881666df1d07a792 SHA-256: ab2bd3c55c558df8b77647c864bc59366cabb00835a9257848baccf045c3ac2a
92 Risk Score

Malware Insights

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

This PDF file contains a large number of external links, a technique often used for SEO manipulation or to distribute malicious content. The heuristic PDF_SEO_LINK_FARM specifically identified a mass external PDF link farm. The ML classifier also strongly indicated maliciousness. The document body contains a reference to 'City of ember book trailer' and the authoring application 'wkhtmltopdf', suggesting a lure document. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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
  • 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://foothillsbiblefellowship.com/uploads/1/3/1/0/131070356/131070356.html#city+of+ember+book+trailer
    • http://ultimatemartialartsusa.com/uploads/1/3/0/6/130605077/c4fe54d1.pdf
    • http://artgoeselectronic.com/uploads/1/3/0/5/130551059/tefilitefokiv-dinorapulaj-mabadugo-voreru.pdf
    • http://healthygrandmother.com/uploads/1/3/0/2/130287895/732397daccd5035.pdf
    • http://www.hellothere2020.com/uploads/1/3/0/6/130621119/wifoj_soseki.pdf
    • http://techsuny.com/uploads/1/3/0/2/130288514/0dcc010f85ae.pdf
    • http://www.alextomkinswithin.com/uploads/1/3/0/6/130621114/raxisapawun-retewesovax-kemekelibovuv.pdf
    • http://reboundat.com/uploads/1/3/0/4/130476462/0a20c1f7f0834.pdf
    • http://www.sharonleebridwell.com/uploads/1/3/0/5/130544147/govoz_rumem_fetefupaken.pdf
    • http://nursingteas.com/uploads/1/3/0/7/130775743/1469912.pdf
    • http://www.borderlinecreativity.com/uploads/1/3/0/3/130323693/dbc419c2c67.pdf
    • http://www.bignightconsulting.com/uploads/1/3/0/4/130435500/rixoji-webejik-baxogepoxaw.pdf
    • http://adabookkeepingservices.com/uploads/1/3/0/2/130270864/karubufov-vixuriloruzum-viwuzeluluku-jawigazamiset.pdf
    • http://4dnportal.org/uploads/1/3/1/0/131071252/6324799.pdf
    • http://arkstore.shop/uploads/1/3/0/7/130740477/pajuxukanar.pdf
    • http://mdfitnessconsulting.com/uploads/1/3/0/7/130740357/2f38e35d36.pdf
    • http://hostmaster.reproengineering.co.uk/uploads/1/3/0/9/130969647/sujewezabepoduxuk.pdf
    • http://wakeforestfarmersmarket.com/uploads/1/3/0/4/130476271/libuwisaseviv.pdf
    • http://iohtea.com/uploads/1/3/0/9/130969331/5a5d8255.pdf
    • http://webdisk.dayafoundation.org/uploads/1/3/0/8/130814460/cb2e76d80f3a201.pdf
    • http://hotelbliss.org/uploads/1/3/0/3/130313199/nuwewa_wevudurarekok_xezuxuxovifeti.pdf
    • http://installatiebedrijf-altena.com/uploads/1/3/0/5/130540714/zediwexululunuwe.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_off000064f0.bin
4a6b10ebf181ebc0cea719e802966b996a763b5e6c2b41d125e0741d4f394294		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64F0 7792 bytes

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