PDF malware analysis — malicious · 7fde930d0640569a

MALICIOUS

PDF

76.3 KB Created: 2021-04-08 01:21:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24

MD5: dca743ac34adf4190bcafb278fcb895d SHA-1: 3eace5686979cc5051ae7c8007af58fedd625c0f SHA-256: 7fde930d0640569ab3593f071e7c05bfa77b760e4fd4ecf02a71bc06d05c719d

206 Risk Score

Malware Insights

MITRE ATT&CK

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

The sample is a PDF document that exhibits characteristics of a link farm, containing numerous external links, some of which are hosted on disposable domains. It also includes a callback phishing lure, suggesting an attempt to trick users into contacting malicious actors. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or exploitation.

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://gimoguvi.ru/strik?utm_term=the+forty+rules+of+love+review PDF link annotation
- https://nabesoke.weebly.com/uploads/1/3/4/0/134042749/355f30fcffa.pdfIn PDF document text
- http://newuwedeza.mypressonline.com/save_website_to_chrome.pdfIn PDF document text
- https://mugakosi.weebly.com/uploads/1/3/1/3/131379948/1705806.pdfIn PDF document text
- https://cdn.sqhk.co/temazajilib/ciiUygh/acrylic_wifi_professional_free.pdfIn PDF document text
- https://cdn.sqhk.co/fojevimexu/jtjjRuq/48549862067.pdfIn PDF document text
- http://mujudesuxiropa.sportsontheweb.net/sony_mdr-zx770bn_wireless_and_noise_cancelling_headphones_instructions.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://91506351-5699-48ce-85e7-8e7d071f4e87.filesusr.com/ugd/d775a9_911eb5df091547c69dccd4577ab665ea.pdf?index=trueIn PDF document text
- https://07bd7893-a6ec-44d5-90fe-c719e602c0bd.filesusr.com/ugd/aafaff_94ae7cde93464e7a8d1534c1e4cb801c.pdf?index=trueIn PDF document text
- https://a0f1d9c0-ea46-4e0e-9383-d87711d3127f.filesusr.com/ugd/1e3fb7_67ee0cc5a2594452a3493db293b6c937.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/a703516d-220e-4adf-bfc9-027ffe9afb54/hp_4630_will_not_print_alignment_page.pdfIn PDF document text
- https://s3.amazonaws.com/sisaxu/87671061780.pdfIn PDF document text
- https://s3.amazonaws.com/serogajugomiji/makita_36v_circular_saw_guide_rail.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/4f5d1234-9fc9-445e-82c3-c89c73ff71d6/warcraft_2_movie_trailer.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/7d338433-0e65-4af5-851e-6a234aa811fc/76911460468.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_off0000e00c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE00C	4624 bytes
SHA-256: `e8b853a1dd4369825bd4b8b4ae1fc861ef6eb8e0626c600845f8ab0a1f6041ba`
`font_01_sfnt_off0000eff8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEFF8	11308 bytes
SHA-256: `d2835ff02cb1ec8e9174a08d6ea37775abab82e16e18c5372041c4529d9fc441`
`font_02_sfnt_off00011653.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11653	4324 bytes
SHA-256: `0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333`

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