Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8b447e5ccb47ece…

MALICIOUS

PDF

61.0 KB Created: 2020-03-30 18:43:58 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: fd134baa273830c88ebc5367ab54798c SHA-1: 7f9c882198578cb01fe5a4bf65d7f83e8d7def4c SHA-256: f8b447e5ccb47ece3aff4969906e3154b27c78b5ffdede7bfaf2f49a4b85b8f3
94 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various domains. The document body text, though partially garbled, includes a Spanish phrase related to finding divisors and mentions wkhtmltopdf, suggesting it might be a generated document. The primary attack pattern appears to be SEO spam or a phishing lure, directing users to a multitude of potentially malicious or deceptive websites.

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://verifaja.net/uploads/1/3/0/4/130476152/130476152.html#encuentra+todos+los+divisores+de+36+48+60
    • http://discoveryblack.vip/uploads/1/3/0/5/130589179/4198447.pdf
    • http://thedogbedcompany.org/uploads/1/3/0/6/130620561/xaxifenoganove.pdf
    • http://2012annualreport.bnaibrith.org/uploads/1/3/0/4/130436441/4eaefabf0d.pdf
    • http://reioflightreiki.com/uploads/1/3/0/5/130551248/1407445.pdf
    • http://elliemitchell.org/uploads/1/3/0/7/130739640/d3c978f157.pdf
    • http://barrons-independent.com/uploads/1/3/0/4/130483986/jepevupabe-gipalabijip.pdf
    • http://snowyelkcoffee.com/uploads/1/3/0/5/130539583/xedewezitep-pizimadokuvured-wikire-gedopovazam.pdf
    • http://denvercolorconsultants.com/uploads/1/3/0/7/130775840/bidisogiti_gavomepitil.pdf
    • http://garagedoorrepairsignalhill-ca.com/uploads/1/3/0/5/130551015/ce998ab615.pdf
    • http://realavier.com/uploads/1/3/0/5/130590431/3eee15.pdf
    • http://imfmonitor.com/uploads/1/3/0/2/130271212/dagabuzil.pdf
    • http://crans-montana-luxury-apartment.com/uploads/1/3/0/6/130639516/bowasovazozefi.pdf
    • http://lanceprowash.com/uploads/1/3/0/6/130621353/gufapudunekejufen.pdf
    • http://ontime247.net/uploads/1/3/0/5/130551057/devogiwimifero.pdf
    • http://guerrillamationfilms.com/uploads/1/3/0/5/130588827/4693845.pdf
    • http://subtleclothing.com/uploads/1/3/0/8/130873838/pawirofuwovo-jozetanonovu-dogoxeve-jaguv.pdf
    • http://amandalambertd.com/uploads/1/3/0/6/130620959/23533.pdf
    • http://dancesummit.org/uploads/1/3/1/1/131163772/ruxuwevoda-juxodopo-jixopupuxekuzik-badubafa.pdf
    • http://dubaisolarcctv.com/uploads/1/3/0/2/130292007/4969443.pdf
    • http://grandviewmemorialpark.com/uploads/1/3/0/7/130739983/nalamo_ronuj_jumutuk_bisuzez.pdf
    • http://canyondesigninc.com/uploads/1/3/0/5/130550832/5218167.pdf
    • http://jamesferrismusic.com/uploads/1/3/0/6/130620803/witogumeluzutemegig.pdf
    • http://restylvage.com/uploads/1/3/0/3/130324326/foluboteline.pdf
    • http://spaceforcegaming.com/uploads/1/3/0/6/130605012/mufimuxukebekabod.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_off0000c7d3.bin
49c4fea4990569c8f273567c93711624db617047bd97bffa96d9d1e020d62583		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC7D3 7572 bytes

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