PDF malware analysis — malicious · e9c2550403333bcd

MALICIOUS

PDF

76.3 KB Created: 2021-01-05 07:08:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14

MD5: eab08533cd83bcb62a014338081fb1ef SHA-1: dc2427a5d900a5be245963eecf929a34b5e1f980 SHA-256: e9c2550403333bcd1feb4de5b44efcb0b14743d2dac003c13b83acbe410ec09f

186 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF document is flagged as malicious by ML classifiers and ClamAV, indicating a phishing or credential harvesting attempt. The presence of external URIs and a link farm on disposable hosting suggests an attempt to redirect users to malicious sites. The document's content, though heavily obfuscated, appears to be a lure related to a refund request failure, consistent with phishing tactics.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

Heuristics 7

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

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
MFA / one-time-code harvesting lure high SE_MFA_LURE

Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
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.
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://trafftec.ru/123?utm_term=amc+refund+request+failed PDF link annotation
- https://cdn-cms.f-static.net/uploads/4421776/normal_5fe8727e87ec9.pdfIn PDF document text
- https://mipijipibax.weebly.com/uploads/1/3/4/8/134873473/2153993.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4405414/normal_5fd957fb6804a.pdfIn PDF document text
- https://zabapekiji.weebly.com/uploads/1/3/4/4/134470890/sepapibili-tesomozadevi.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4412890/normal_5f9855ce46a11.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4462066/normal_5fe18bea415e9.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4421205/normal_5fdd62be7d4ec.pdfIn PDF document text
- https://wojasatog.weebly.com/uploads/1/3/4/7/134765175/sakuvodaw_puwibasixet_golepizumogod.pdfIn PDF document text
- https://vekukexulijoj.weebly.com/uploads/1/3/4/3/134397774/170576.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4365598/normal_5f8a6881445ef.pdfIn PDF document text
- https://sebupemisopuba.weebly.com/uploads/1/3/4/7/134706320/zojodin_pabila_jegokilobut_japajal.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366365/normal_5f871cbf582ea.pdfIn PDF document text
- https://wafitaweligu.weebly.com/uploads/1/3/4/5/134587259/3170791.pdfIn PDF document text
- https://fakimodixoto.weebly.com/uploads/1/3/0/7/130739088/wojilisikug-fabonapuba.pdfIn PDF document text
- https://fitatopiwize.weebly.com/uploads/1/3/0/7/130739398/cc34ed52e2a58.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/suzujewa/zapebemuvamukikaf.pdfIn PDF document text
- https://s3.amazonaws.com/lanaladu/illinois_escheatment_reporting.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_off0000e19e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE19E	5052 bytes
SHA-256: `1eb0a57f649b316bf09b68acf25f64817534605bca407d81a10d6d29a0c5e93b`
`font_01_sfnt_off0000f2a0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF2A0	10396 bytes
SHA-256: `07ffdf8f72af8f48c13d0e31af0bfc6a6e7742d489d3358405d87c9cd66ca465`
`font_02_sfnt_off00011630.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11630	4324 bytes
SHA-256: `7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71`

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