Malicious PDF — malware analysis report

Static analysis result for SHA-256 496777670cab263a…

MALICIOUS

PDF

43.0 KB Created: 2020-03-24 02:38:19 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-24
MD5: ad1f960f6ab63e1a1f2a9b242cc43001 SHA-1: 1fa1387308376982ab9d15391e78bb20684f29ae SHA-256: 496777670cab263a8577fa5bebcd86011f9f89c6b3e4d2aa793e50153f297a76
96 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various domains. The document body text is largely unreadable, but the presence of numerous URLs suggests a link farm or distribution mechanism for further malicious content. No scripts were extracted from this sample, limiting the ability to determine specific payload delivery or execution methods.

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://scrubs4work.com/uploads/1/3/0/5/130551054/130551054.html#pasos+a+seguir+del+metodo+sintetico PDF link annotation
    • http://creditfromhome.net/uploads/1/3/0/7/130775048/xawozuvitafolotasag.pdfIn PDF document text
    • http://godspeedmagazine.com/uploads/1/3/0/5/130543305/wexobivut-kepasi-keriwere.pdfIn PDF document text
    • http://www.406northvbclub.com/uploads/1/3/0/4/130483147/vetuxexog.pdfIn PDF document text
    • http://wisewomanintegration.com/uploads/1/3/0/6/130605267/94bf4fe0.pdfIn PDF document text
    • http://vishaalenterprises.com/uploads/1/3/0/4/130435702/xakukofolejo-fuxes.pdfIn PDF document text
    • http://downsideupphoto.com/uploads/1/3/0/6/130620996/2294957.pdfIn PDF document text
    • http://hostmaster.thesolomon.co.za/uploads/1/3/0/7/130775835/jejakipo_vifolexa.pdfIn PDF document text
    • http://woodenboxprods.com/uploads/1/3/0/4/130476242/zobaxoremimi.pdfIn PDF document text
    • http://hercubs.org/uploads/1/3/0/8/130813796/bevezatabi_xenutenokuko.pdfIn PDF document text
    • http://newyorktravelmedicine.com/uploads/1/3/0/6/130603900/33be0ef2d2e.pdfIn PDF document text
    • http://karagulle.com.tr/uploads/1/3/0/5/130539120/6124594.pdfIn PDF document text
    • http://covalentroasters.com/uploads/1/3/0/2/130289387/zomawelupuwumer-zuroda-simasalif.pdfIn PDF document text
    • http://www.hippique.qc.ca/uploads/1/3/0/3/130323417/3486459.pdfIn PDF document text
    • http://bb-lash.com/uploads/1/3/0/7/130739316/sasefaxipores.pdfIn PDF document text
    • http://barrettexhausts.com.au/uploads/1/3/0/8/130813798/ad7fbae.pdfIn PDF document text
    • http://chrystinericard.com/uploads/1/3/0/4/130483043/3715305.pdfIn PDF document text
    • http://www.shelleyortner.com/uploads/1/3/0/5/130544446/8036571.pdfIn PDF document text
    • http://percyphotos.com/uploads/1/3/0/5/130540208/tumugit_dikesal.pdfIn PDF document text
    • http://bootsanddiamonds.net/uploads/1/3/0/6/130604081/tenusewefalarikogor.pdfIn PDF document text
    • http://postmaster.spaansepolder-kantoorkamers.nl/uploads/1/3/0/4/130492038/deruvoxogog.pdfIn PDF document text
    • http://britanynavarretephotography.com/uploads/1/3/0/5/130588954/22f2c3ac.pdfIn PDF document text
    • http://dakotadeadman.com/uploads/1/3/0/5/130539091/4103184.pdfIn PDF document text
    • http://www.joetoonz.com/uploads/1/3/0/2/130270832/21580013b5935.pdfIn 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

Related samples 1

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_off00007c6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C6C 8948 bytes
SHA-256: 1e0de58bb85ba74bb1942521188b4db73fadb2e348afe3f01f8975cfadc05a3c

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