Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbfe473f70f9009d…

MALICIOUS

PDF

55.5 KB Created: 2020-03-20 15:43:41 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2026-05-08
MD5: 9398da8cef183d5259128aa91b9500a7 SHA-1: 81f8dd2683b3360523c9bcb6eba160f783ce21ff SHA-256: fbfe473f70f9009ded8a43e542651d39a32b909ef2b1b0640705b8b91f2cd8ee
136 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various domains, suggesting a link farm or SEO spam operation. The document body contains garbled text but also includes a URL that appears to be part of the link farm. No scripts were extracted from this sample. The primary attack pattern involves directing users to a multitude of external resources.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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://420reason.com/uploads/1/3/0/4/130435785/130435785.html#conair+heat+sense+foot+spa+reviews PDF link annotation
    • http://yournaturallybrightpatiocovers.com/uploads/1/3/0/5/130547418/gomunalewurim.pdfIn PDF document text
    • http://www.fishevodevogeno.org/uploads/1/3/0/6/130640074/ba407e7cce0765.pdfIn PDF document text
    • http://www.budapestvietnam.net/uploads/1/3/0/5/130542920/7636229.pdfIn PDF document text
    • http://tatismoving.ca/uploads/1/3/0/9/130969209/wogabumem_nokulofusidebo_solot.pdfIn PDF document text
    • http://jljohnsonproperties.com/uploads/1/3/0/8/130874394/a8bcf8.pdfIn PDF document text
    • http://www.erichgeospatial.com/uploads/1/3/0/6/130604056/4973ec.pdfIn PDF document text
    • http://www.myearthworldphotography.com/uploads/1/3/0/7/130776035/wudutizudexukabomiku.pdfIn PDF document text
    • http://thebluebutterfly138.com/uploads/1/3/0/2/130289345/romakofepuda.pdfIn PDF document text
    • http://www.2max.us/uploads/1/3/0/4/130478203/lijefuruziwub.pdfIn PDF document text
    • http://katherinesiu.com/uploads/1/3/0/6/130621654/5185748.pdfIn PDF document text
    • http://www.woodsearchrecruiting.com/uploads/1/3/0/4/130489131/257d11.pdfIn PDF document text
    • http://vps.sosalliance.org/uploads/1/3/0/5/130551433/nirefaxavilude.pdfIn PDF document text
    • http://prainhademorungava.com/uploads/1/3/0/5/130588502/vanup.pdfIn PDF document text
    • http://cjentzart.com/uploads/1/3/0/7/130740571/1910552.pdfIn PDF document text
    • http://mta-sts.mx.stipplestudio.com/uploads/1/3/0/4/130476423/9fedfd1.pdfIn PDF document text
    • http://www.nevo-ins.com/uploads/1/3/0/2/130272600/tabepuwunizad.pdfIn PDF document text
    • http://billsduckcarving.club/uploads/1/3/0/3/130379612/sunarerepipa_manew_kavemowede.pdfIn PDF document text
    • http://www.radioastronomysupplies.net/uploads/1/3/0/5/130543156/nuriralozemuwewide.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
🗂 Part of campaign: cjentzart.com 7 samples

Related samples 4

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_off0000aefe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAEFE 8548 bytes
SHA-256: 93ea4540557023ab64978bc640068cbcf15e37e0bf6fafe8beb6ae801c653a1d

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