PDF malware analysis — malicious · bd30f87b404bcbd3

MALICIOUS

PDF

82.9 KB Created: 2021-05-20 16:04:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22

MD5: 9803a8259f0ff7828f975b020f0894d4 SHA-1: 9ea29f3e7f1d3660f05fdb8af2c574bc0b27824d SHA-256: bd30f87b404bcbd3831fac81dcd8d6939e1b5553e61a69cb8d1630c72d2d9576

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

Nyx PDF Classifier malicious score 0.9976

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://mezovuduw.ru/strik?utm_term=9th+class+computer+application+book PDF link annotation
- https://mimitokiwunas.weebly.com/uploads/1/3/4/0/134012498/zomuzukokuzixekixapi.pdfIn PDF document text
- https://zolujalu.weebly.com/uploads/1/3/1/8/131856956/2239108.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4502439/normal_601ced29ceffa.pdfIn PDF document text
- https://befukifesili.weebly.com/uploads/1/3/1/4/131453358/josibo-lewifodovifir-xiverepiwa-puwumaw.pdfIn PDF document text
- https://rudanivaxaf.weebly.com/uploads/1/3/4/4/134497940/tupawukirafiten.pdfIn PDF document text
- https://wokewimafagi.weebly.com/uploads/1/3/4/5/134598023/javazowosiwep-xodebop-wizive.pdfIn PDF document text
- https://tigidejuremu.weebly.com/uploads/1/3/4/5/134502839/e0cf01f.pdfIn PDF document text
- https://veximukexapi.weebly.com/uploads/1/3/0/9/130969798/lagukuji.pdfIn PDF document text
- https://tatazopizen.weebly.com/uploads/1/3/1/1/131163492/5159414.pdfIn PDF document text
- https://zenavepofiwu.weebly.com/uploads/1/3/1/6/131607810/zabopitipitiwolawi.pdfIn PDF document text
- https://zesasanigemi.weebly.com/uploads/1/3/4/6/134646319/75112e235edb1b.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4476757/normal_5fe54f5d0a44a.pdfIn PDF document text
- https://wosobariwosamu.weebly.com/uploads/1/3/4/3/134372044/6549633.pdfIn PDF document text
- https://tazabavirivagi.weebly.com/uploads/1/3/0/8/130814173/ximazuzedoxukawumu.pdfIn PDF document text
- https://lawepisofav.weebly.com/uploads/1/3/4/4/134473025/8354385.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://s3.amazonaws.com/ronenitevodo/evaluate_and_graph_polynomial_functions_worksheet_answers.pdfIn PDF document text
- https://s3.amazonaws.com/fadadedezeker/jacob_eason_nfl_scouting_report.pdfIn PDF document text
- https://s3.amazonaws.com/buxoparadazegu/66681841275.pdfIn PDF document text
- https://s3.amazonaws.com/bulikowexunepov/bodo_song_2018_video.pdfIn PDF document text
- https://s3.amazonaws.com/gawabog/whats_another_word_for_multiplication.pdfIn PDF document text
- https://s3.amazonaws.com/nuxepiduded/delicious_emily_s_christmas_carol.pdfIn PDF document text
- https://s3.amazonaws.com/xuvamuba/fedex_customer_service_human.pdfIn PDF document text
- https://s3.amazonaws.com/tanapilamaxi/the_end_of_evangelion_ost_mp3.pdfIn PDF document text
- https://s3.amazonaws.com/nafibanefexex/robin_hood_prince_of_thieves_castle_scene.pdfIn PDF document text
- https://s3.amazonaws.com/litunux/muwakudurenoputedomix.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
- 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_off0000e324.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE324	5320 bytes
SHA-256: `79614667e32378f4556334d13dad3dda75d9f515adbddcf334d3e15d97f7dee4`
`font_01_sfnt_off0000f4ff.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF4FF	10832 bytes
SHA-256: `2e3694670f448873fdf725b7fc71d475e057f66847fec8cdb5e5e5608b53e4db`
`font_02_sfnt_off00011a22.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11A22	16164 bytes
SHA-256: `e296a61d2d303e35be9e1a35631556663d2780498efa7e8f3867bf557f172fe6`
`font_03_sfnt_off00012f39.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12F39	4324 bytes
SHA-256: `b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c`

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