Malicious PDF — malware analysis report

Static analysis result for SHA-256 4346c2ee89c01096…

MALICIOUS

PDF

36.3 KB Created: 2020-05-17 06:41:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 220099e3bec7b0abed43ba7949fd711c SHA-1: 09bbf2b1d55631a21cee70357d09062959d92309 SHA-256: 4346c2ee89c010962e1807eb8795f27142edecc4bd2571ee2c85cefa1fb652f1
96 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which are numerically or generically named, suggesting a link farm or SEO manipulation tactic. The document body, though partially corrupted, indicates a lure related to a "Homicide report long beach". The primary attack pattern involves redirecting users through these numerous external links, likely to a malicious site or to host further malicious content. No scripts were extracted, limiting the analysis of direct payload execution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://azbizarts.com/uploads/1/3/1/3/131398515/131398515.html#homicide+report+long+beach
    • http://hookerhomebuyers.com/uploads/1/3/0/2/130272286/lunajujozokoviluta.pdf
    • http://youngspencil.com/uploads/1/3/0/8/130874218/nekanizagevox.pdf
    • http://northeastbathrooms.net/uploads/1/3/0/9/130969231/tunizi_fanijopiromej_kifedebeso_javafozewi.pdf
    • http://ericcrain.com/uploads/1/3/0/2/130288520/buvuwaxulatiru.pdf
    • http://thearlyworm.com/uploads/1/3/0/6/130621995/683446.pdf
    • http://sydneyparks.info/uploads/1/3/0/6/130639091/99d001.pdf
    • http://mew-ville.shop/uploads/1/3/0/6/130605331/e67985e89c08019.pdf
    • http://bikramyogawestside.com/uploads/1/3/1/3/131380263/tebufisa-vupekivupazugo-bazanosewos-muxiwumapame.pdf
    • http://coratoloassociatesllc.com/uploads/1/3/1/1/131164159/repig.pdf
    • http://natelebrunphoto.com/uploads/1/3/0/6/130620627/lirubo_laremamo.pdf
    • http://windowcleaningservicesseattle.com/uploads/1/3/1/6/131606252/091c9dc6bec0.pdf
    • http://ethosbeats.com/uploads/1/3/1/4/131408103/34ea10bab75.pdf
    • http://davethegeek.net/uploads/1/3/1/6/131637037/6600953.pdf
    • http://aircleannsheen.com/uploads/1/3/0/9/130969562/35da838bdf8c853.pdf
    • http://hundredpercentrealestate.com/uploads/1/3/1/3/131383661/8473629.pdf
    • http://quickcleancarpet.com/uploads/1/3/0/8/130874566/b1740c9c90.pdf
    • http://smartbizmodel.com/uploads/1/3/0/3/130323703/tapomo-nugeruga-rijazen.pdf
    • http://cutscratch.com/uploads/1/3/0/3/130313294/efed5c.pdf
    • http://marykaysellsmilitary.com/uploads/1/3/0/6/130604701/2302207.pdf
    • http://alsalmanflooring.com/uploads/1/3/0/4/130476442/juvamesewisinavot.pdf
    • http://florsnmore.com/uploads/1/3/0/2/130289205/2135474.pdf
    • http://jevantechaneycandles.com/uploads/1/3/1/8/131856277/beborivix-guvup-jibetulizi.pdf
    • http://josephturyatemba.com/uploads/1/3/0/8/130814596/zowebepawegabudilifu.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_off00006198.bin
5c490b4139f7146584fd50b038edce3b727ef0209906de5388253155a96bc43b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6198 10512 bytes

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