PDF malware analysis — malicious · 0c4c80338d6379d5

MALICIOUS

PDF

73.3 KB Created: 2021-03-26 08:59:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07

MD5: 7f0ae95e91facd8ea38abc32f1d86829 SHA-1: 61691e74e527785b9210c8f1a26c1f10b3e3869d SHA-256: 0c4c80338d6379d5bd6a6cdda01b27cbad90ef0c7ff9413118bb47573d3cd003

186 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was identified as malicious by multiple heuristics and an ML classifier, with ClamAV detecting it as Pdf.Phishing.Trojan. The file functions as a link farm, containing numerous external URLs, one of which is a known phishing indicator. The PDF structure and embedded content suggest an attempt to lure users to malicious sites, likely for credential harvesting or further malware delivery.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

Heuristics 6

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

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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://resalured.ru/123?utm_term=adhyatma+ramayana+pdf PDF link annotation
- https://jiwepurojal.weebly.com/uploads/1/3/0/7/130775762/7b095e9d97e0.pdfIn PDF document text
- https://wepebajaka.weebly.com/uploads/1/3/4/5/134588919/zoxutasubelitetevos.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://5c71d6b4-13b5-43a2-97a4-9a0eba4d0f4d.filesusr.com/ugd/0f1814_d8188bfef0fd4668bf4ad25cf4decc0d.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/235c3188-ebdd-4769-bf48-7787fcb3dc44/life_changing_magic_of_tidying_up_ebook.pdfIn PDF document text
- https://8860adff-7f0b-4cf3-a358-cdd560dff136.filesusr.com/ugd/625844_d6719627bd57404297bcb37ee59d0a4c.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/sogovekevi/do_your_best_famous_quotes.pdfIn PDF document text
- https://a0f1d9c0-ea46-4e0e-9383-d87711d3127f.filesusr.com/ugd/1e3fb7_6e509f0714844f6386abb3905fd74d72.pdf?index=trueIn PDF document text
- https://1dda4824-043e-406b-9213-03d4b91bb4d1.filesusr.com/ugd/7695bb_e4946b484c95414a89c24cee3ceb8103.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/7f6f1a76-6d0f-4af7-b47f-b0445f2e803e/data_science_masters_online_berkeley.pdfIn PDF document text
- https://569961a5-e6b5-462d-8b38-7193d5e7b20b.filesusr.com/ugd/a37a2e_9d5ac991d04743d68d4560dc0be80e50.pdf?index=trueIn PDF document text
- https://52a72965-a6d2-471e-b66a-59a59a4d663b.filesusr.com/ugd/e643da_c39c269d500f4af48c58bb9983d98ba0.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/958871a4-038c-4aa3-b1ca-8445e8df6bb0/84212992274.pdfIn PDF document text
- https://a1d1c4ac-cf1d-4c58-861c-45d1188f4b60.filesusr.com/ugd/052f3a_4fa640e38f824a5db3a8cd579834a018.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/zufaxepixiguxax/tagufizeges.pdfIn PDF document text
- https://8c56b32b-3398-45d6-9c0b-b55146621f16.filesusr.com/ugd/6924eb_b330a02ea3234069bf3f7db58fe65956.pdf?index=trueIn PDF document text
- https://2a497570-3881-454f-aefc-229a18bbdf22.filesusr.com/ugd/83e24f_32a3f37177484e8391d0aee207524475.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/garorowa/new_bhojpuri_song_video_2019.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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000e3dd.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE3DD	5164 bytes
SHA-256: `51072fa12b5884ebba23be7693bd1203ecba2d099d38d755c8cb854ed195cd71`
`font_01_sfnt_off0000f54b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF54B	10284 bytes
SHA-256: `09b033d1d57a5f5b1cc2a1bfebd5b1ea9deb0233d210dc4d5966c8edc00d4c86`

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