PDF malware analysis — malicious · 2699ed98f02fd2b6

MALICIOUS

PDF

70.9 KB Created: 2021-01-23 12:01:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18

MD5: c18ad17b6234921509764695b1235a1f SHA-1: cd9cc8ae70740b20e32200a28fb0d77de456f075 SHA-256: 2699ed98f02fd2b623390d971d437c9a81f39cc3b6bb6e7681cc7d81fa708c0c

186 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of external links, many hosted on disposable domains, suggesting a link farm or redirection scheme. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for distributing further payloads or phishing. Although no scripts were explicitly extracted, the PDF structure and numerous external links are indicative of malicious activity.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

Heuristics 6

ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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.
Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM

Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
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 https://traffking.ru/aws?utm_term=knockin+boots+line+dance+step+sheet PDF link annotation
- https://xiduzejeg.weebly.com/uploads/1/3/1/6/131606953/lurasekiw.pdfIn PDF document text
- https://lefilima.weebly.com/uploads/1/3/0/7/130775934/a7c21d.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4457854/normal_5fe490d2ccba0.pdfIn PDF document text
- https://sewobefavewekog.weebly.com/uploads/1/3/4/3/134367647/dbd31e07808.pdfIn PDF document text
- https://cdn.sqhk.co/wujejelot/hrLid5C/xcraft_shark_tank_deal.pdfIn PDF document text
- https://bexokafosirur.weebly.com/uploads/1/3/2/6/132695536/lodaza_segatakabezogu_zutajulunumojok.pdfIn PDF document text
- https://kanunobak.weebly.com/uploads/1/3/1/0/131070574/vipuvezewujuj-nuloxofakesab.pdfIn PDF document text
- https://nebunabimumebu.weebly.com/uploads/1/3/4/4/134480995/simenonor-pizosemuzami.pdfIn PDF document text
- https://nisivijuwowog.weebly.com/uploads/1/3/0/8/130813757/9836ed332b175.pdfIn PDF document text
- https://vawudida.weebly.com/uploads/1/3/4/8/134890241/64563f54c5975a0.pdfIn PDF document text
- https://komomofuxuz.weebly.com/uploads/1/3/4/4/134494735/sodonefekakarumabaxi.pdfIn PDF document text
- https://vamawawu.weebly.com/uploads/1/3/0/8/130874524/31bb9c66cea1b56.pdfIn PDF document text
- https://bofejaximolapob.weebly.com/uploads/1/3/4/7/134751884/zumemiga.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4408348/normal_5fe9562339c48.pdfIn PDF document text
- https://masodorenos.weebly.com/uploads/1/3/0/9/130969057/lunif.pdfIn PDF document text
- https://zigizawinowola.weebly.com/uploads/1/3/4/4/134457077/xibemawuwutafo.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn 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
- http://scripts.sil.org/OFLIn PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000c1ae.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC1AE	5236 bytes
SHA-256: `f1d369f766d333ab90b1ef4838fbcb2545b72761091c9dfd7e519c85a5503b15`
`font_01_sfnt_off0000d378.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD378	10788 bytes
SHA-256: `c3912d29ccdccc2e7b5f67e6a5603cca3339cf180fb314b805d0f12b0c43849b`
`font_02_sfnt_off0000f8c5.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF8C5	16344 bytes
SHA-256: `7e0863d6dcdfe3ce59f67395a06e5e8634226e44f713773c85e494ff6d119ee1`

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