Malicious PDF — malware analysis report

Static analysis result for SHA-256 209360015c825f6d…

MALICIOUS

PDF

38.0 KB Created: 2020-05-15 09:50:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-08-25
MD5: a0ba3a2e57a249b54b496997a2eae9d6 SHA-1: bbd4f1c61accfa0bc3f847e1ef6682b007aadce6 SHA-256: 209360015c825f6dced664783193815ad4b2c5399f1ca57297209561cbaa9f82
96 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which point to other PDF files hosted on similar domains. The document body text, though partially corrupted, includes a lure related to downloading free Android applications. This suggests a link farm or redirection scheme designed to lead users to potentially malicious content. The ML classifier also strongly indicated maliciousness.

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://vmapropiedades.com/uploads/1/3/1/3/131379875/131379875.html#mejores+sitios+para+descargar+aplicaciones+android+gratis PDF link annotation
    • http://fredrickgibson.com/uploads/1/3/1/0/131070652/1910206.pdfIn PDF document text
    • http://rodneylwalkernc.com/uploads/1/3/1/3/131381553/3364747.pdfIn PDF document text
    • http://howellemploymentsvs.com/uploads/1/3/0/6/130620480/xukumo.pdfIn PDF document text
    • http://andrewhortonexpeditions.com/uploads/1/3/1/3/131398335/8131358.pdfIn PDF document text
    • http://elpasonoise.com/uploads/1/3/1/0/131070073/napen.pdfIn PDF document text
    • http://catcash1.com/uploads/1/3/0/6/130639400/dobobidilepedux_majuf_faxel.pdfIn PDF document text
    • http://artforahome.com/uploads/1/3/0/8/130814706/1179503.pdfIn PDF document text
    • http://amomentintimemusical.com/uploads/1/3/0/4/130483783/musil.pdfIn PDF document text
    • http://socialsecuritydefender.com/uploads/1/3/1/4/131454766/ridesaga.pdfIn PDF document text
    • http://journeyoftheself.net/uploads/1/3/0/6/130621278/wilomisugenajol.pdfIn PDF document text
    • http://kandyshopbeads.com/uploads/1/3/0/3/130323210/1395149.pdfIn PDF document text
    • http://brenhamfoundationrepair.com/uploads/1/3/0/8/130874079/4941690.pdfIn PDF document text
    • http://paulsgospel.org/uploads/1/3/1/6/131637161/6772617.pdfIn PDF document text
    • http://cassandrascateringandmeals.com/uploads/1/3/0/8/130874368/xotizefebir-sijunu.pdfIn PDF document text
    • http://viwokids-art.com/uploads/1/3/0/6/130639266/db44b86eca7c3bc.pdfIn PDF document text
    • http://mouldedfibre.net/uploads/1/3/0/4/130477448/1966768.pdfIn PDF document text
    • http://myhomecleaningservices.com/uploads/1/3/0/6/130621465/kegadotenakuxipema.pdfIn PDF document text
    • http://maacontractorllc.com/uploads/1/3/0/6/130621293/1eae6a407d4995.pdfIn PDF document text
    • http://fortnitebuddy.com/uploads/1/3/0/3/130379163/sidezawipumi.pdfIn PDF document text
    • http://mysugarnotes.com/uploads/1/3/0/7/130775306/7f1d465.pdfIn PDF document text
    • http://kandicraft.net/uploads/1/3/0/6/130604554/ce6163d4c.pdfIn PDF document text
    • http://babyreadybundles.com/uploads/1/3/0/5/130544072/pisoboxuko_xosefoso.pdfIn PDF document text
    • http://handleysrin.org/uploads/1/3/0/5/130588698/bowekin_parisuv.pdfIn PDF document text
    • http://dio-training.com/uploads/1/3/0/5/130589288/48b386bb763fc9.pdfIn PDF document text
    • http://shallowaterlittleleague.org/uploads/1/3/1/3/131398134/lebatiwoleliges_kujiboguxal.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 4

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006664.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6664 10800 bytes
SHA-256: f2f2d045010f9f57597d4651cfc709f6d531863e19e8b9d09303b86ad2159865

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