PDF malware analysis — malicious · ccd181a7ba7b105c

MALICIOUS

PDF

81.6 KB Created: 2021-05-02 13:28:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21

MD5: 6b4b9c448cd04fdfedc510c5988d0a32 SHA-1: 1f34dc23f43fbcdd92d4494a7e15fdeffcd3f152 SHA-256: ccd181a7ba7b105cdc7773082f2871502de0f372e21e238213b46e353aa1b639

186 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The sample is a PDF file flagged by ClamAV as Pdf.Phishing.Trojan and by an ML classifier with high confidence. It contains a large number of external links, many pointing to disposable hosting, suggesting a link farm or phishing lure. One prominent URL is https://lozipotod.ru/strik?utm_term=kansas+carry+on+my+wayward+son+guitar+pro+tab, which is likely part of the malicious campaign. No scripts were extracted, but the PDF structure and numerous external links indicate a malicious intent to redirect users.

Machine Learning

Nyx PDF Classifier malicious score 0.9991

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://lozipotod.ru/strik?utm_term=kansas+carry+on+my+wayward+son+guitar+pro+tab PDF link annotation
- https://cdn-cms.f-static.net/uploads/4481994/normal_600fccd041216.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366306/normal_601bcdec70a6c.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4448724/normal_6050fa8666574.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4451950/normal_605bb32356baf.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4425916/normal_60191fba1cb7c.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4486548/normal_5fed5e419b6dc.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4365661/normal_60365e81f1f80.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4373240/normal_605bdbe9bb976.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4489981/normal_5ffe0812c2b3a.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4446774/normal_60060ed24d87a.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4391611/normal_603511ea2f7f3.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://ed4d48c2-14ea-47f5-a89a-b82193587323.filesusr.com/ugd/8ce377_378a40c927584c8eaf386983337858a9.pdf?index=trueIn PDF document text
- https://5c2df1de-05ea-4e17-9aa3-38adc7ce3153.filesusr.com/ugd/ddd609_472e4e95ee2c4c75987d32cd8d4e3a17.pdf?index=trueIn PDF document text
- https://41d9b059-0b17-466b-96e6-f31a3f3e9b19.filesusr.com/ugd/f1ead9_29942ad0e8214ea3bd94637f3c9d6d26.pdf?index=trueIn PDF document text
- http://bexatati.epizy.com/cavallino_treporti_camping.pdfIn PDF document text
- http://safinemawexow.epizy.com/genetics_notes_for_neet.pdfIn PDF document text
- https://5a1138df-423b-4a5d-a7c7-36223740754e.filesusr.com/ugd/a72fa8_95d5e96c12344de29cd54954d8c06375.pdf?index=trueIn PDF document text
- https://2a4065d7-883d-43e8-a524-7ce9aa4b4e88.filesusr.com/ugd/ccb1c6_1ef13c337fdd4ef78982d36269fa7cf7.pdf?index=trueIn PDF document text
- https://e40da922-b0e4-44be-9878-2d4898ccab21.filesusr.com/ugd/3a38e0_23c3dc6b4a6647e8a3feae62c3e75dec.pdf?index=trueIn PDF document text
- https://434dcbc4-7bd9-40fe-99bf-e102daebf961.filesusr.com/ugd/07ef24_aa925c1db2c9498a8f442fd98fdf6898.pdf?index=trueIn PDF document text
- https://45f61934-b4a1-4335-a9e3-e142d9465b5b.filesusr.com/ugd/0dd040_16d7891be453415e9a05ec42b506122e.pdf?index=trueIn PDF document text
- https://ae40ec61-d20a-40a8-9c94-208d4569f534.filesusr.com/ugd/5d0862_9c8adb908e7742e693def511c32f56b0.pdf?index=trueIn PDF document text
- https://6d706a39-1f93-4f1a-9423-caccf7e65e71.filesusr.com/ugd/69f91f_5290c78c339741d48a296af2a1bf2519.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000f1d1.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF1D1	5428 bytes
SHA-256: `bddc54fb05cb497e538381d0aa5d4d282489ee03dec0b02cdaa0ec58de41999b`
`font_01_sfnt_off00010436.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10436	11008 bytes
SHA-256: `104e2dd9ae4cb4adb306d8ce84d6ad7257c26d3b95babddc6770c7978e225aec`
`font_02_sfnt_off00012a1a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12A1A	4324 bytes
SHA-256: `1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e`

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