PDF malware analysis — malicious · 1fb58790687aca60

MALICIOUS

PDF

73.3 KB Created: 2021-03-06 05:20:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07

MD5: 89f4941737440b625f5dc84301650e9c SHA-1: 5c819ab85b17cb8fa6e4689e86561fab85abf9ca SHA-256: 1fb58790687aca6036e65774629b8aacecfdfba60fd8b7a6f7ab90f1accb1265

176 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various PDF files. The ML classifier and ClamAV detection strongly indicate maliciousness, with ClamAV identifying it as Pdf.Phishing.Trojan. The presence of embedded URLs and the nature of the link farm suggest an attempt to redirect users to potentially malicious content or engage in phishing-like activities. No scripts were extracted, but the structure itself is suspicious.

Machine Learning

Nyx PDF Classifier malicious score 0.9991

Heuristics 6

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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.
Callback phishing phone lure medium SE_CALLBACK_LURE

Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
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://botokaw.ru/123?utm_term=strikemaster+ice+auger+carb+kit PDF link annotation
- https://cdn-cms.f-static.net/uploads/4450139/normal_602013a997d91.pdfIn PDF document text
- https://zozetaxurumel.weebly.com/uploads/1/3/4/5/134590082/6989162.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4452624/normal_6007438e3dca8.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4367668/normal_5fc8bd92cbbf9.pdfIn PDF document text
- https://velalozelo.weebly.com/uploads/1/3/4/4/134498802/jojaku.pdfIn PDF document text
- http://sixesijilolun.mywebcommunity.org/does_alexa_work_with_roku_express.pdfIn PDF document text
- https://navojinalano.weebly.com/uploads/1/3/4/7/134755450/zojazum_belexup_nadamomadoso_dewopafo.pdfIn PDF document text
- https://vulabomanuxuw.weebly.com/uploads/1/3/4/8/134857085/sanogapage.pdfIn PDF document text
- https://reseviris.weebly.com/uploads/1/3/5/4/135400779/9dc4e3.pdfIn PDF document text
- http://zipubezexupoka.mywebcommunity.org/38328216238.pdfIn PDF document text
- http://ludirobus.getenjoyment.net/integral_calculus_formula_sheet.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4493282/normal_5fd85d6b07085.pdfIn PDF document text
- https://dumisoxi.weebly.com/uploads/1/3/4/6/134625223/c40bc00.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4427544/normal_600a9521ba057.pdfIn PDF document text
- https://vugawijop.weebly.com/uploads/1/3/4/5/134594760/1214106.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- https://s3.amazonaws.com/wazorixekunafob/99533115724.pdfIn PDF document text
- https://s3.amazonaws.com/gapivegek/clash_royale_pc.pdfIn PDF document text
- https://s3.amazonaws.com/mefovu/10450515984.pdfIn PDF document text
- https://s3.amazonaws.com/vexeliku/dawosetaruduxagu.pdfIn PDF document text
- https://s3.amazonaws.com/nezanurugega/new_pokemon_gba_games_free.pdfIn PDF document text
- https://s3.amazonaws.com/zarelusipofox/blackshirts_and_reds_epub.pdfIn PDF document text
- https://s3.amazonaws.com/duzexefemosaxe/24159154219.pdfIn PDF document text
- https://s3.amazonaws.com/xanunafojuloki/zadenimixexumonoluja.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
- http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000d43e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD43E	5060 bytes
SHA-256: `bcdf9b024cfdaf9bdc4b36a2755dffb6225586ab747c11ce11db60c28a7876d6`
`font_01_sfnt_off0000e56c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE56C	10652 bytes
SHA-256: `0b8d54fad19e83d8ba3c76a995246730eb5a4d3fd1efd2870bcbdcc8fc0ba391`
`font_02_sfnt_off000109b0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x109B0	4324 bytes
SHA-256: `0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333`

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