PDF malware analysis — malicious · ae04d0c9ef010d2b

MALICIOUS

PDF

90.3 KB Created: 2021-02-14 08:47:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18

MD5: 2d62d699f174953c8e7c89e829cdd43a SHA-1: 1d5af1fcb5996e4a3ae78cd1881ae47b9daed53b SHA-256: ae04d0c9ef010d2bb5d9b1d2196d8d7cc6b30e7f274b4c5548966f588ef8192b

186 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was identified as malicious by ML classifiers and ClamAV, flagging it as a phishing trojan. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm or SEO manipulation tactic. The presence of multiple external URIs and the detection as a phishing trojan indicate a high likelihood of malicious intent, possibly to distribute further malware or lead users to phishing sites.

Machine Learning

Nyx PDF Classifier malicious score 0.9993

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.
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://baarspo.ru/wix?keyword=unity+in+diversity+meaning PDF link annotation
- https://diwijavel.weebly.com/uploads/1/3/4/6/134691177/fatesifavijusit.pdfIn PDF document text
- https://neweruruxoponi.weebly.com/uploads/1/3/1/4/131453136/2630112.pdfIn PDF document text
- https://cdn.sqhk.co/tojofelekob/Lh6iaJi/94628909502.pdfIn PDF document text
- https://cdn.sqhk.co/pifixijowoka/uhajjfh/kajinuripotunosurul.pdfIn PDF document text
- https://cdn.sqhk.co/leredupodeka/jjbSRje/30315614042.pdfIn PDF document text
- https://gariligiradafa.weebly.com/uploads/1/3/4/0/134041078/lojudasaneliroge.pdfIn PDF document text
- https://juposuwidamad.weebly.com/uploads/1/3/1/4/131406248/58988.pdfIn PDF document text
- https://dojifidixiwaji.weebly.com/uploads/1/3/4/3/134372722/genawin-natofekipub-surakebovu.pdfIn PDF document text
- https://cdn.sqhk.co/vulovosovem/iiccAjb/63279784237.pdfIn PDF document text
- https://bepixumute.weebly.com/uploads/1/3/5/3/135302933/432197.pdfIn PDF document text
- https://cdn.sqhk.co/vonezositixi/ighapgg/small_business_loans_dallas_tx.pdfIn PDF document text
- https://cdn.sqhk.co/videgogaf/Ohk33ig/77620626291.pdfIn PDF document text
- https://cdn.sqhk.co/dubutemaruxu/cxAOiaT/space_colonizers_idle_clicker.pdfIn PDF document text
- https://cdn.sqhk.co/suxepemup/qEvjgif/sandisk_switch_vs_ultra.pdfIn PDF document text
- https://sobemifukoku.weebly.com/uploads/1/3/4/8/134887972/4964935.pdfIn PDF document text
- https://cdn.sqhk.co/befozaxulot/RghvJgh/bovoxabuzomew.pdfIn PDF document text
- https://digonowokeke.weebly.com/uploads/1/3/1/8/131856318/839ef92b1.pdfIn PDF document text
- https://cdn.sqhk.co/kixarozikej/crgdGhQ/10638118918.pdfIn PDF document text
- https://cdn.sqhk.co/datolabevev/ijexjgM/kenigixopowubekaxes.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/toguvaju/11143761810.pdfIn PDF document text
- https://s3.amazonaws.com/nojemi/wupuxuretese.pdfIn PDF document text
- https://s3.amazonaws.com/mizeteb/google_maps_platform_blog.pdfIn PDF document text
- https://s3.amazonaws.com/bidemewufa/yowhatsapp2_apk_2019.pdfIn PDF document text
- https://bit.ly/3jJcdGKIn 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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off000127ac.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x127AC	5268 bytes
SHA-256: `ab1a34d51e35be7662e31fddeef047b6b261190510acbdb383a8a62e40563a09`
`font_01_sfnt_off0001398b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1398B	9972 bytes
SHA-256: `ddc273551a782c5f75f824b3a2993e063581f239754af9e59e080df088352908`

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