Malicious PDF — malware analysis report

Static analysis result for SHA-256 7bfc16cceffb4559…

MALICIOUS

PDF

42.8 KB Created: 2020-04-04 16:21:41 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 42a168cc1ddffa37cb0e321ee8dc5178 SHA-1: 94d9b0f2723bcada29b4a4951b051df0222f8cf5 SHA-256: 7bfc16cceffb45596e7241cb5620101a5f2cf8a1edd61d96f3263be59867c677
62 Risk Score

Malware Insights

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

This PDF file contains a large number of external links pointing to other PDFs hosted on various domains. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass external PDF link farm, suggesting a tactic to manipulate search engine results or distribute content across many domains. The embedded URLs likely serve as entry points to this network, potentially leading to further malicious activity or phishing attempts. No scripts were extracted from this sample.

Heuristics 3

  • 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
  • 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://siouxfallshomebuyer.com/uploads/1/3/0/8/130874180/130874180.html#ejercicios+de+diagrama+de+pert+y+cpm
    • http://detroitretreat.com/uploads/1/3/0/2/130273798/77136ce4.pdf
    • http://dealofthedaychevyz71.com/uploads/1/3/1/3/131380339/nowosasurotido.pdf
    • http://boquetenaturehike.com/uploads/1/3/1/0/131070890/juxavotidape.pdf
    • http://rwsecuritynews.com/uploads/1/3/0/7/130775103/terilofezimipovut.pdf
    • http://theinvisiblecio.com/uploads/1/3/0/6/130604166/9802955.pdf
    • http://peaceinchrist2018.com/uploads/1/3/0/9/130968992/goralakukedizoduteb.pdf
    • http://thestudioat19main.com/uploads/1/3/0/2/130273884/9839811.pdf
    • http://painsufferersspeak.com/uploads/1/3/0/2/130289177/rotuzaga-buratifetegoxi.pdf
    • http://exquisiteencounters.org/uploads/1/3/0/3/130313343/6df254548e48f5.pdf
    • http://bump-baby-beyond.com/uploads/1/3/0/6/130639192/gibipiroj-sabipebosonivo-mukes.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_off00007c8c.bin
7c9ba17d3d0a8826681dec4426261be6448ff84e61d5f32feea0773ab72507f4
pdf-font-stream PDF embedded font (sfnt) at offset 0x7C8C 9360 bytes