Malicious PDF — malware analysis report

Static analysis result for SHA-256 6242554a44893276…

MALICIOUS

PDF

43.6 KB Created: 2020-03-15 11:31:16 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 89b2671b20b2050eab3bf2f8e3ce5138 SHA-1: f0805111d2c495c854f1fe5113a87d3ac68ce246 SHA-256: 6242554a44893276938d413652dfa89d2862398342bd52ec32da280467392c2e
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains numerous embedded links, many of which are structured as SEO-optimized URLs pointing to PDF files. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, suggesting a link-farming or redirection scheme. The document body, though partially corrupted, contains text related to a sale and also includes URLs, reinforcing the lure to click on these links. No scripts were extracted, but the presence of many external links points to a redirection or phishing attack.

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://autodiscover.themodestshoptx.com/uploads/1/3/1/0/131070993/131070993.html#army+hot+weather+uniform+for+sale
    • http://blueoceangranite.com/uploads/1/3/0/5/130551962/abfec.pdf
    • http://inharmonywithjane.co.uk/uploads/1/3/0/6/130639461/jabukuninot.pdf
    • http://ip105-colo.mnemonix.com/uploads/1/3/0/9/130969229/jazewo.pdf
    • http://huangjiajinbaoyulechengzhengguiwangzhi.f18.ebkf.org/uploads/1/3/0/2/130274305/nijorox-mifanobejajin.pdf
    • http://d-team.info/uploads/1/3/0/4/130483625/gadej.pdf
    • http://realestate.veronicablight.com/uploads/1/3/0/2/130291371/e819e87900.pdf
    • http://sellnowguarantee.com/uploads/1/3/0/5/130543190/tejudalika.pdf
    • http://deutscheversicherung.com/uploads/1/3/0/7/130738892/zuvabezaw_nibaxodo.pdf
    • http://angelasresidentialcare.com/uploads/1/3/0/8/130814216/wetifid_salizebiwamatot_bukevowiribav_lokewetus.pdf
    • http://wer4jesus.com/uploads/1/3/0/6/130603855/8225293.pdf
    • http://neighborhoodcatadvocates.com/uploads/1/3/0/5/130589174/difuviwasupafige.pdf
    • http://soleilribbon.com/uploads/1/3/0/9/130969501/ditinarewolozoz-xoxewopekerek-mojinesiruzo.pdf
    • http://hivedeep.com/uploads/1/3/0/6/130605275/futigu.pdf
    • http://hostmaster.dezi-mal.de/uploads/1/3/0/7/130740141/liwazazuwakufosoj.pdf
    • http://filipinoamericanmarketing.com/uploads/1/3/0/5/130588984/bavanojisas.pdf
    • http://miamicustomtours.com/uploads/1/3/0/5/130544313/piselivakoti_wesigixafowu_xasap_vefojulafe.pdf
    • http://horsethemegifts.co.uk/uploads/1/3/0/6/130639508/famifizijewofasol.pdf
    • http://mynaturalplace.org/uploads/1/3/0/2/130291575/xosejarizatibudaj.pdf
    • http://www.highwealdshepherdhuts.com/uploads/1/3/0/7/130776508/savexovoto_vuxovavofo_suxuseninobome_nadegav.pdf
    • http://andashome.com/uploads/1/3/0/8/130814055/7906069.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_off00008056.bin
1bbe91281eee871431b99a3d38435fc6ce17646eb2ec0c74bec922b4cc4958aa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8056 8392 bytes

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