PDF malware analysis — malicious · 48400867a389bc47

MALICIOUS

PDF

81.4 KB Created: 2021-06-03 01:22:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20

MD5: d166e0cb3ce54c3f189c523655df5fee SHA-1: cf35e223a444f1e967768082b8855d98ca4f1b85 SHA-256: 48400867a389bc47fcfbcf94ea13e2ed017fbcbbcc1bdaf4527ad534d6bf8a1f

186 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains a large number of external links, many of which point to disposable hosting and are likely part of a link farm designed to manipulate search engine results. The primary URL, 'https://baarspo.ru/123?utm_term=adanga+maru+movie+hd++in+tamilrockers', suggests a lure for pirated movie content, a common tactic for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent.

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/123?utm_term=adanga+maru+movie+hd++in+tamilrockers PDF link annotation
- https://static.s123-cdn-static.com/uploads/4411512/normal_5ff10868ed923.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4494452/normal_606df898732c7.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4486353/normal_6022dcf24669d.pdfIn PDF document text
- https://kuvupugupa.weebly.com/uploads/1/3/7/5/137502184/3729532.pdfIn PDF document text
- https://bawejitomu.weebly.com/uploads/1/3/1/4/131438353/6438394.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4378151/normal_5fc9dcf47f746.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4501770/normal_5ffca9818b669.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4376357/normal_6023bc997ec02.pdfIn PDF document text
- https://static.s123-cdn-static-d.com/uploads/4373749/normal_60b2ef74f142b.pdfIn PDF document text
- https://xutogimumunode.weebly.com/uploads/1/3/4/3/134375265/feboxulid_luveruna_seguta_dupumoti.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4426823/normal_60610d5d593b3.pdfIn PDF document text
- https://static.s123-cdn-static-d.com/uploads/4407576/normal_60b2e7d8947e6.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4379241/normal_604d96357a810.pdfIn PDF document text
- https://simisodiguguvig.weebly.com/uploads/1/3/5/3/135324772/zowur.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4529095/normal_60589cbfce676.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4467577/normal_600ab3846c779.pdfIn PDF document text
- https://jowiroluka.weebly.com/uploads/1/3/4/3/134336896/gevepegovilenan.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://fedorahosted.org/lohitIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- https://uploads.strikinglycdn.com/files/78f6c257-93b5-40ef-8649-a4611d581f8e/52447894355.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/d71fee2d-f2d7-405c-bc27-8329ab57cc96/what_is_data_science_ibm_coursera.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/3f8e62de-8cc8-4cdc-9926-55c89e19d119/51003846.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/34a977ba-144a-44cb-8ec5-c13f045c14e9/jesipivub.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 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000e5e6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE5E6	5348 bytes
SHA-256: `e2aef3cce44844a292f9a21d72e9b09a495ad14a86270b66cf399061ff7dcecf`
`font_01_sfnt_off0000f7e4.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF7E4	2968 bytes
SHA-256: `cefc64ca524d2c585e22c623b2e62012448f277e49a98a6d343c42c013d1ae37`
`font_02_sfnt_off00010434.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10434	10820 bytes
SHA-256: `f7308fe05e0ad653aae101add1e4aec5264e60e7ec6af2ac2141df040d18c0aa`
`font_03_sfnt_off00012927.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12927	4324 bytes
SHA-256: `05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176`

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