PDF malware analysis — malicious · 52e120926e02cfd2

MALICIOUS

PDF

82.7 KB Created: 2021-05-19 00:51:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21

MD5: 34d5544076821061c3d97b7b98f4c945 SHA-1: 631ffe9c29ca186a0d7a3f28fae0f86f3efafcd4 SHA-256: 52e120926e02cfd23718882890009303d5e539adce0e803eb0b598fddff76fb5

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of external links, identified as a link farm, suggesting a malicious intent to redirect users. The ClamAV detection and ML classifier strongly indicate this PDF is malicious, likely a phishing or malware distribution lure. The embedded URLs point to various PDF documents hosted on external sites, potentially serving as a distribution mechanism for further payloads.

Machine Learning

Nyx PDF Classifier malicious score 0.9990

Heuristics 5

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.
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://jumiwimov.ru/strik?utm_term=what+does+blanche+want+in+a+streetcar+named+desire PDF link annotation
- https://static.s123-cdn-static.com/uploads/4468819/normal_60069e5b3bd24.pdfIn PDF document text
- https://sepuzudagek.weebly.com/uploads/1/3/5/3/135329554/4016383.pdfIn PDF document text
- https://kepowawovexe.weebly.com/uploads/1/3/4/0/134016687/5613636.pdfIn PDF document text
- https://sivipafegedijog.weebly.com/uploads/1/3/4/4/134443607/bamaze.pdfIn PDF document text
- http://benikovumur.iblogger.org/aditi_singhal.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4492892/normal_5fe2c148d77cd.pdfIn PDF document text
- https://fagugirawax.weebly.com/uploads/1/3/4/3/134388021/3633424.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4385004/normal_601cbc6e364dc.pdfIn PDF document text
- https://rolutadaneked.weebly.com/uploads/1/3/2/6/132681657/f9394.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4410186/normal_5fcc3bd7b897e.pdfIn PDF document text
- https://jevamupoledi.weebly.com/uploads/1/3/4/7/134712268/vanitabixiwimizil.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4373008/normal_604cf991671f3.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4393755/normal_5fc5a0e321259.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4370066/normal_5fdf317965295.pdfIn PDF document text
- https://likimipezerejo.weebly.com/uploads/1/3/2/6/132682052/bavin.pdfIn PDF document text
- https://sunejojixin.weebly.com/uploads/1/3/1/0/131071277/4599331.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4498404/normal_603e60e831f6d.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4388165/normal_5feba39ae1a92.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
- http://pasigajixivete.epizy.com/angry_birds_transformers_hack_unlimited_gems.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/be50f5f5-294f-4d90-8411-ec61bfa1fb05/can_fox_news_be_shut_down.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/72e134d6-f900-4823-9001-d7778afc1a43/jebufuzizojivuduxage.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/cfe5fca8-9a4c-4126-9590-d055a1bb0b67/narcissus_and_echo_greek_mythology_notes.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/922b4056-74c5-4604-8196-e8ba10152214/68479123280.pdfIn PDF document text
- http://sobikunukozi.rf.gd/turbo_assembler_manual.pdfIn PDF document text
- http://pavoserelolaw.epizy.com/whistle_baby_hd_video_song.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_off0000f6d0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF6D0	5212 bytes
SHA-256: `c044b371003411a43cb65c0c10a99da0cb957c08e386ce2f56cc83aad0d55643`
`font_01_sfnt_off00010867.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10867	11076 bytes
SHA-256: `d29040647387e1771219cdcbb7b912107437a0b8add514c437df60542aeb8478`
`font_02_sfnt_off00012e1c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12E1C	4324 bytes
SHA-256: `cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34`

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