Malicious PDF — malware analysis report

Static analysis result for SHA-256 3408ff01b64010f2…

MALICIOUS

PDF

54.5 KB Created: 2020-05-23 02:25:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 76ae7d1c6b100c239d95e7514853e19e SHA-1: 0a8ae4c43481c88ad7a89f11804813bcdb68709b SHA-256: 3408ff01b64010f21ca9bc638843bea4e8dddfc820a46de8bd8823a1b6a29360
96 Risk Score

Malware Insights

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

This PDF file exhibits characteristics of a link farm or SEO spam, containing a large number of external links to other PDF documents hosted on various domains. The ML classifier strongly flagged this sample as malicious, and the presence of numerous external URIs suggests an attempt to manipulate search engine results or distribute potentially harmful content. No scripts were extracted, but the sheer volume of linked PDFs indicates a coordinated effort to direct traffic or host malicious payloads.

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://lists.accordionapocalypse.com/uploads/1/3/0/4/130483520/130483520.html#qt+stylesheet+classes
    • http://thatlibertarian.com/uploads/1/3/0/6/130639534/5214255.pdf
    • http://juliayarnshop.com/uploads/1/3/0/3/130379287/zixufigego_wexebojepepi_fujetev.pdf
    • http://mx.ssbwolfhounds.us/uploads/1/3/0/7/130775511/fetilad.pdf
    • http://jewelsbysanto.com/uploads/1/3/1/4/131483492/4f81e709e97e545.pdf
    • http://lovesbakescakes.com/uploads/1/3/0/4/130435514/892044.pdf
    • http://baw-rook.com/uploads/1/3/1/3/131381519/e519244e2e.pdf
    • http://cochraneresearchinstitute.org/uploads/1/3/0/6/130621401/c15d745c7e5b.pdf
    • http://cambodiansingle.com/uploads/1/3/1/3/131381882/9dd03be6e28.pdf
    • http://shopheartstringswv.com/uploads/1/3/0/4/130476454/pekowomis.pdf
    • http://razerupin.com/uploads/1/3/1/4/131483265/2625319.pdf
    • http://neelyprocurement.com/uploads/1/3/0/9/130969011/wukinokagasatofef.pdf
    • http://claimlostfunds.com/uploads/1/3/0/5/130545360/ceaf3383053a24.pdf
    • http://xnx19.com/uploads/1/3/1/3/131398582/juxozul_zisomoxu_ragop_kunomiwugefo.pdf
    • http://freshfishprints.net/uploads/1/3/0/3/130379675/benuje.pdf
    • http://larsonip.com/uploads/1/3/0/6/130604011/7951180.pdf
    • http://indiepublishing.guru/uploads/1/3/1/4/131453348/4326342.pdf
    • http://thetechfrood.com/uploads/1/3/1/8/131856757/e7a6207.pdf
    • http://safecleaningau.com/uploads/1/3/0/2/130291555/8213751.pdf
    • http://silangancrossfit.com/uploads/1/3/0/5/130588579/fegezadulubetujuv.pdf
    • http://troylittleitaly.org/uploads/1/3/0/4/130483990/lexawutodeba.pdf
    • http://jordansgunworks.com/uploads/1/3/0/6/130604317/muxazuxa_dudaguraj_nolapenet.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • 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/
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a516.bin
0f9963e2ba06784dfb556a2790d04eb711c875be0b45a0b88980f0f63e9a6dd6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA516 12440 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.