Malicious PDF — malware analysis report

Static analysis result for SHA-256 a448e2e4cfb07e29…

MALICIOUS

PDF

45.0 KB Created: 2020-03-30 01:50:59 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: f4789139fd910716a6631e0e8afc709b SHA-1: b0c9011881c3746f37db2d264769210572063886 SHA-256: a448e2e4cfb07e29ec6e2f8a8af150b721881f42a1b15e5e0638101f7bdf1a5c
94 Risk Score

Malware Insights

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

This PDF file exhibits characteristics of a link farm or SEO spam, containing a large number of external links to various domains. The ML classifier strongly indicated maliciousness. The primary purpose appears to be directing users to a wide array of external websites, potentially for advertising, phishing, or hosting further malicious content.

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://mta-sts.mx.letiziaiannaccone.com/uploads/1/3/0/7/130775506/130775506.html#factor+de+potencia+de+transformadores
    • http://everythingsirie.net/uploads/1/3/0/7/130775520/582a37.pdf
    • http://meetprobank.com/uploads/1/3/0/5/130590481/kuvuxinalatisolepok.pdf
    • http://goldturtlegames.com/uploads/1/3/0/5/130550655/pegan.pdf
    • http://expertonboarding.com/uploads/1/3/0/3/130379206/newofigesiwiso.pdf
    • http://lvlsactive.shop/uploads/1/3/0/7/130739197/womisipirep-sulodaka.pdf
    • http://littlepawsreiki.com/uploads/1/3/0/7/130776083/misedaw.pdf
    • http://swflhandyman.com/uploads/1/3/0/9/130969830/rotivibubog_berope_menofise_litokokevad.pdf
    • http://worthlivingmn.com/uploads/1/3/0/2/130289561/76a9d892ead4.pdf
    • http://riversforhealth.org/uploads/1/3/1/3/131378913/3693465.pdf
    • http://reiwang.com/uploads/1/3/0/7/130738966/b5ca9c6d0.pdf
    • http://indianapolisflowermarket.com/uploads/1/3/0/8/130874309/wazat_tadoxovaninax_mirodilojek_bemen.pdf
    • http://bfmix.com/uploads/1/3/1/4/131453480/sopobibe-bugikegaw-fukutunux.pdf
    • http://yoursupplier.ca/uploads/1/3/0/7/130739312/liponezuwaromovewor.pdf
    • http://mkh-mfg.com/uploads/1/3/0/2/130272925/5a05fde81cd8.pdf
    • http://stoneelectricalservices.com/uploads/1/3/1/3/131382607/4236131f72fa92.pdf
    • http://les-cacaos.com/uploads/1/3/0/4/130478868/penigewerabiki.pdf
    • http://brendalacasse.com/uploads/1/3/0/7/130775342/kozuzolalir.pdf
    • http://collectiveexpeditions.com/uploads/1/3/0/7/130738805/rawemo.pdf
    • http://15810heacock.com/uploads/1/3/0/5/130551050/pemetoxovaxije_benezok.pdf
    • http://gritandgracetv.com/uploads/1/3/0/6/130639872/3166796.pdf
    • http://sweetfernliving.com/uploads/1/3/0/7/130774981/5379708.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_off00007fd4.bin
9d63e973012ff78eb0bbd6c79d34a7f00433e90739f957d91b97b42bd1eba48a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7FD4 11796 bytes

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