Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e65825dbaa13d45…

MALICIOUS

PDF

42.6 KB Created: 2020-03-22 06:54:47 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-24
MD5: 88da735218c1378146c877136f765dfe SHA-1: 7c3a028bbadb5d1d7d7a475a46fc138d96145f59 SHA-256: 7e65825dbaa13d45ec5c5936abd777b97e6b3e36c1ab7073a611a524fdcb1b54
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

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 a method to distribute malicious content or SEO spam. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the sheer volume of external links is suspicious.

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://myentouragemusic.com/uploads/1/3/0/7/130775728/130775728.html#frases+en+frances+cortas+traducidas+al+espa%C3%B1ol PDF link annotation
    • http://phoebenewling.com/uploads/1/3/0/2/130288507/zirolizigap_zawasur.pdfIn PDF document text
    • http://documentcameras.nl/uploads/1/3/1/0/131070866/76024cc73b81.pdfIn PDF document text
    • http://difficultdriving.com/uploads/1/3/0/6/130605108/3f6a353f.pdfIn PDF document text
    • http://giftsofcreativity.com/uploads/1/3/0/7/130739938/vifovo-fofovuvawozasup.pdfIn PDF document text
    • http://colorsforcubatikkumolamkids.com/uploads/1/3/0/7/130740169/nowez.pdfIn PDF document text
    • http://www.ucfmilesforsmiles.com/uploads/1/3/0/8/130873794/77aa12d05cea200.pdfIn PDF document text
    • http://sixtydaywebsite.com/uploads/1/3/0/7/130739745/28e57ca1.pdfIn PDF document text
    • http://kmradvisers.com/uploads/1/3/0/5/130544230/turepabiwosofut.pdfIn PDF document text
    • http://wolfgangbaur.com/uploads/1/3/0/5/130551402/mexuxuz.pdfIn PDF document text
    • http://christiandreamers.com/uploads/1/3/0/6/130621950/gawawawobumagozefa.pdfIn PDF document text
    • http://mestizostacos.com/uploads/1/3/0/6/130604198/gesevetukepunuk_tovuxoxo.pdfIn PDF document text
    • http://adsgroup-wines-food.com/uploads/1/3/0/6/130620604/minasozebanasibuxu.pdfIn PDF document text
    • http://jaredlord.com/uploads/1/3/0/5/130543979/xidir.pdfIn PDF document text
    • http://dunawaysurveying.com/uploads/1/3/0/5/130589014/tugugupigufux.pdfIn PDF document text
    • http://www.jenniferratcliffe.org/uploads/1/3/0/6/130621163/fufafo.pdfIn PDF document text
    • http://jgrimmer.com/uploads/1/3/0/8/130814030/vamelaje.pdfIn PDF document text
    • http://www.heavenonaplateandmylife.me/uploads/1/3/0/7/130776754/4554035.pdfIn PDF document text
    • http://takwenyatourssafarisltd.com/uploads/1/3/0/2/130271143/19a2c9e22cb0edd.pdfIn PDF document text
    • http://six-kingdoms.com/uploads/1/3/0/8/130814644/zugixatum-favozi.pdfIn PDF document text
    • http://precisionsprayparts.net/uploads/1/3/0/3/130323475/7858462.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: bienchulas.com 4 samples

Related samples 2

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_off000078ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78CA 9832 bytes
SHA-256: b72d8c659a0aad41d6ce860b54e58e7f7d2a173c04ad420ba4c304f13ada903b

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