PDF malware analysis — malicious · 99ee44cdc1f6409b

MALICIOUS

PDF

77.1 KB Created: 2021-02-21 21:20:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23

MD5: 9a9d9fcb3d10ef78a5f1f405aa3b43b0 SHA-1: 23fb55e229b2dcea5852d51520baa48dcbc5ca7f SHA-256: 99ee44cdc1f6409b96b2b3560c88fc1c68c5bc994e08669b307190911486df25

206 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains a large number of external links, many hosted on disposable domains, suggesting a link farm or phishing campaign. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, contains references to 'gta 5 online money generator download', indicating a lure for potentially malicious content.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

Heuristics 7

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.
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://jottigo.ru/wix?keyword=gta+5+online+money+generator+download PDF link annotation
- https://static.s123-cdn-static.com/uploads/4476947/normal_5fca27a3acffe.pdfIn PDF document text
- https://cdn.sqhk.co/piwewupovo/ezpjhjf/best_power_bank_for_cell_phone.pdfIn PDF document text
- https://delovamubikener.weebly.com/uploads/1/3/4/7/134707073/20a2f.pdfIn PDF document text
- https://rakamukomegu.weebly.com/uploads/1/3/2/6/132681656/jixonizuva.pdfIn PDF document text
- https://tererenigi.weebly.com/uploads/1/3/1/4/131405956/zopiniduke_denis.pdfIn PDF document text
- https://sotogirepatobob.weebly.com/uploads/1/3/1/4/131453915/dibitezoto-kovewukefosa-talizes.pdfIn PDF document text
- https://nolomiwasuwizug.weebly.com/uploads/1/3/4/6/134661688/kewupusigelepez_xajajorob_budini.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4384652/normal_5fc9d163c95ae.pdfIn PDF document text
- https://fomememuvur.weebly.com/uploads/1/3/4/0/134000402/6258650.pdfIn PDF document text
- https://mumotajesok.weebly.com/uploads/1/3/0/7/130738730/5315397.pdfIn PDF document text
- https://sanuvexugivi.weebly.com/uploads/1/3/1/6/131606490/add12c.pdfIn PDF document text
- https://dilozerekake.weebly.com/uploads/1/3/1/4/131452754/35bb5505a78280e.pdfIn PDF document text
- https://kukuwusak.weebly.com/uploads/1/3/1/3/131379738/ca4307b5433e36.pdfIn PDF document text
- https://nexirexosevexos.weebly.com/uploads/1/3/4/5/134500935/2170665.pdfIn PDF document text
- https://cdn.sqhk.co/bapulofuw/Fja6jaT/merge_dragons_challenge_19_wiki.pdfIn PDF document text
- https://samaruwopag.weebly.com/uploads/1/3/0/7/130738554/4cda98594d9.pdfIn PDF document text
- https://cdn.sqhk.co/panafilaputu/Lgftjf1/ahly_vs_zamalek_live_stream_youtube.pdfIn PDF document text
- https://fufejaxogepevi.weebly.com/uploads/1/3/4/4/134485438/rojavazo.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000f1b3.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF1B3	5316 bytes
SHA-256: `d53a2a69c3c1d9d10382261ec83876b7a93794886b9b1d73b79982d10df4dd5e`
`font_01_sfnt_off000103ce.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x103CE	10412 bytes
SHA-256: `ebd797f51f148ca66640e8cd96d117ae9500a7fbaeebb1e80d69f57317a16eab`

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