Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc1d3e6a21b98bc7…

MALICIOUS

PDF

40.3 KB Created: 2020-04-03 08:39:59 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: edb0ee5329cf165803c5d0973df34158 SHA-1: 0f1f5216b90bbe390e7e1a949d59345f6af38cf7 SHA-256: fc1d3e6a21b98bc75fc46c3f10e7da8fdc7e12df94efea7c485bda20bf2773ae
94 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to other PDFs with numeric slugs in their paths, indicative of a link farm. The ML classifier strongly flagged this PDF as malicious. The primary attack pattern involves directing users to a network of potentially malicious or SEO-spam content hosted on various domains.

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://sdrvowners.org/uploads/1/3/1/3/131384024/131384024.html#maytag+centennial+washer+actuator+part+number
    • http://strategyproperty.com/uploads/1/3/0/6/130603834/belaxis.pdf
    • http://executivemotorcoach.net/uploads/1/3/0/6/130620266/duwikixexurimivogovi.pdf
    • http://niakas.gr/uploads/1/3/0/4/130435791/gekinok.pdf
    • http://godoycapital.com/uploads/1/3/0/4/130435922/7563064.pdf
    • http://augustapickleball.org/uploads/1/3/0/8/130813427/b93b9c3.pdf
    • http://wilsoninteriordesign.com/uploads/1/3/0/6/130639329/6193905.pdf
    • http://downsmassage.com/uploads/1/3/0/7/130774999/vamadupe.pdf
    • http://lotsofsmooches.com/uploads/1/3/0/2/130271046/feloduxo-wukogurokas-sofufamabewesi.pdf
    • http://themagadanmission.com/uploads/1/3/0/2/130273735/2208331.pdf
    • http://karlypaigeim.com/uploads/1/3/0/6/130604720/sulik.pdf
    • http://brittgresh.org/uploads/1/3/0/5/130539706/padisudepu_popidora.pdf
    • http://myassetprotectionlawyers.com/uploads/1/3/0/8/130873943/xifexotomoxuk-pazabifuxebax-vutumun-bupubikakevub.pdf
    • http://momochieikaiwa.jp/uploads/1/3/0/8/130873715/paliwis_jijifar_zupetozujeb_gakupisikowipix.pdf
    • http://judydollarhide.net/uploads/1/3/0/5/130589168/kunajewavurupaji.pdf
    • http://trumarkmaintenance.com/uploads/1/3/0/8/130873984/boterobabagedifeza.pdf
    • http://wikiresumen.org/uploads/1/3/1/0/131069910/9cb7499.pdf
    • http://lowpricefireglass.com/uploads/1/3/0/4/130483322/penukedeka_puregaz_woxexu.pdf
    • http://sheinspirations.com/uploads/1/3/0/5/130589442/nelulupe.pdf
    • http://specrubber.vismediagroup.com/uploads/1/3/1/3/131383916/gexudusofise-xigedabuj-mijinaluzaj.pdf
    • http://fetchcarriers.com/uploads/1/3/0/8/130813531/paviz.pdf
    • http://raelelectrical.com/uploads/1/3/1/4/131454367/efc3900c.pdf
    • http://justyourwayprints.com/uploads/1/3/1/3/131398268/gizuj.pdf
    • http://zetaestates.com/uploads/1/3/0/6/130620544/754023b15.pdf
    • http://zetaestates.com/uploads/1/3/0/6/130620544/754023b
    • 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_off00007297.bin
53169fab3a272cf5ddf304bac3ad9b9c306fb1ed137b7b3e7d58acb8c0fccd5e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7297 8596 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.