PDF malware analysis — malicious · 2edb48f3666c5a73

MALICIOUS

PDF

85.3 KB Created: 2021-03-15 07:01:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20

MD5: 0098842d6eb4f3e040c834e463dd4446 SHA-1: 2cfc6571674ecd3d3f5881941bf6733fbe29552d SHA-256: 2edb48f3666c5a7327436753c79ea3a8a0c24713d8dafd4d23b82f5270ab927a

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous external links, a common tactic for SEO poisoning or phishing campaigns. The heuristic PDF_SEO_LINK_FARM indicates a mass of external links, and the ClamAV detection as Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 strongly suggests malicious intent. The embedded URLs point to potentially malicious or unrelated content, and the document body, though garbled, suggests a lure related to a service manual.

Machine Learning

Nyx PDF Classifier malicious score 0.9991

Heuristics 5

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.
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://zajinet.ru/wix?keyword=2011+bmw+328i+xdrive+service+manual PDF link annotation
- https://cdn-cms.f-static.net/uploads/4370055/normal_602dfcd45eb6f.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4415934/normal_602931c836213.pdfIn PDF document text
- https://cdn.sqhk.co/gukugifixija/gcDgfPN/42853447693.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4485689/normal_5fffc165b1d3b.pdfIn PDF document text
- https://cdn.sqhk.co/vupapevixu/ggAgcbp/46084287186.pdfIn PDF document text
- https://cdn.sqhk.co/guzoladip/Cib0YDY/hd_wifi_cam_pro_manual.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4409238/normal_60388c2613abe.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4379030/normal_601a148b6f021.pdfIn PDF document text
- https://cdn.sqhk.co/reserujaj/ahbz3wv/3099492813.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://uploads.strikinglycdn.com/files/2d6b53f5-fb92-46d2-a286-40d7d785c70b/70300164765.pdfIn PDF document text
- https://s3.amazonaws.com/dujepav/coupon_template_powerpoint.pdfIn PDF document text
- https://s3.amazonaws.com/fifuto/28942312991.pdfIn PDF document text
- https://e809654a-a95b-4dbc-a338-24085255a2f8.filesusr.com/ugd/1b6cec_f79bcbde598241198654144f6f984622.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/a6fcf41e-504d-47c4-b963-6b843f1af9e0/99773715146.pdfIn PDF document text
- https://s3.amazonaws.com/vitelitubovuluj/fojomarokenurip.pdfIn PDF document text
- https://c504e2ef-f928-4e80-b5b1-fc05046f432e.filesusr.com/ugd/247f25_22ba3e60111e4c6f9966a34c418b75fb.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/dowesitobuga/minijaruni.pdfIn PDF document text
- https://s3.amazonaws.com/vapite/fiwisowimidij.pdfIn PDF document text
- https://s3.amazonaws.com/mejigavukolu/bullet_for_my_valentine_albums_free.pdfIn PDF document text
- https://f1cb2ec4-a82d-4768-8a06-5236a2db220e.filesusr.com/ugd/a2e20a_04f247fec71a439f9b08e09114670a4f.pdf?index=trueIn PDF document text
- https://042e50b4-45d0-4577-915a-c14d43ab21ad.filesusr.com/ugd/18f527_5b644d9216d644e49f44e0d9855acfa3.pdf?index=trueIn PDF document text
- https://2eda13a9-9e0f-47dd-bbfa-a9a5028a3314.filesusr.com/ugd/61c57f_a2c1028b0dfe4ad2a9ef3baa6a148d62.pdf?index=trueIn 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
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000e80b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE80B	5728 bytes
SHA-256: `52c9ea87118049c0ae5fc1078162c9710fa39b9f41ab79a39bc4c249357ca154`
`font_01_sfnt_off0000fb6a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFB6A	11376 bytes
SHA-256: `39f08e3a09cf68a3940d766d7dafce9defabf3ef3119fcd578edbad09b63db23`
`font_02_sfnt_off00012278.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12278	16144 bytes
SHA-256: `d23f5d175da8b49439e54dbe153db26b729410b7cf39a22d3aa4d034fda31bbf`
`font_03_sfnt_off00013776.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x13776	4324 bytes
SHA-256: `b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c`

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