PDF malware analysis — malicious · ffb7bede1f515d81

MALICIOUS

PDF

84.4 KB Created: 2021-03-07 05:08:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23

MD5: 784dd88051b69d67a90287dd28d7b6e5 SHA-1: cabb299bd4886bf0e2d1d13e9a7e532992f7a06a SHA-256: ffb7bede1f515d819d5bb65c5679f29afb8535c65905ea4cbfcbc8a959e1465e

214 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded links, with at least one identified as a malicious redirector. The document body, though heavily obfuscated, appears to contain product-related keywords, suggesting a lure for phishing or to drive traffic to malicious sites. The presence of numerous external links points towards a link farm or a distribution mechanism for further malicious content.

Machine Learning

Nyx PDF Classifier malicious score 0.9990

Heuristics 5

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

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK

PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
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.
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://dafemum.ru/wix?keyword=tacklife+circular+saw+with+laser+guide In PDF document text
- https://cdn.sqhk.co/leloxoreje/gQ3ifxc/20713277985.pdfIn PDF document text
- https://wobanuwu.weebly.com/uploads/1/3/5/9/135959505/peromarovusegugem.pdfIn PDF document text
- https://peketodofow.weebly.com/uploads/1/3/4/5/134589962/3fc916e924ed0.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4409826/normal_600eea19d9853.pdfIn PDF document text
- https://cdn.sqhk.co/nuvurero/dYECWje/glitch_video_effect_app.pdfIn PDF document text
- https://nefopenexa.weebly.com/uploads/1/3/0/7/130739549/vujigodexepo.pdfIn PDF document text
- https://volifutizur.weebly.com/uploads/1/3/4/6/134602954/lonuwub.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4454682/normal_5fee8810558f1.pdfIn PDF document text
- https://ninobajoxakatud.weebly.com/uploads/1/3/4/7/134702009/4af8ef783.pdfIn PDF document text
- https://cdn.sqhk.co/nosuterib/gysFKjg/photo_studio_equipment_for_sale_in_south_africa.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4388842/normal_601300c4c6308.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4403805/normal_600901a99d5f8.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4497369/normal_601eab786103a.pdfIn PDF document text
- https://cdn.sqhk.co/ganuniwiku/dhdgjEq/tezojolemodogavibodasepat.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://9b704b87-3668-414c-a24e-b30400fe0e33.filesusr.com/ugd/51c472_da09a212adc64494912a8fadf8ad09bd.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/rurovikejigibu/53032930814.pdfIn PDF document text
- https://s3.amazonaws.com/tizowodifi/alcohol_consumption_guidelines_nhs.pdfIn PDF document text
- https://s3.amazonaws.com/tokit/nafutegodozeba.pdfIn PDF document text
- https://eac5c218-d238-408c-98a6-8ff0ecbb25fc.filesusr.com/ugd/b1277d_dcdecc5b30fe49c1a79ab99d2f094cc4.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/poresi/los_cinco_lenguajes_del_amor_test.pdfIn PDF document text
- https://s3.amazonaws.com/nitatotol/old_snapper_lawn_mower_for_sale.pdfIn PDF document text
- https://s3.amazonaws.com/fupanabivote/website_maintenance_report_template.pdfIn PDF document text
- https://s3.amazonaws.com/dojivewobasuval/95071651971.pdfIn PDF document text
- https://2e6726a7-2e78-456a-9fa1-8bc85c3b20a6.filesusr.com/ugd/76e31d_a96ab50cdc4648f9b19b28010be58cd1.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_off0000f352.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF352	7116 bytes
SHA-256: `9852d3f1f032619727cb1ce694e6b7ef05d7ac00d87708744eafc2b3607bd216`
`font_01_sfnt_off00010b40.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10B40	5388 bytes
SHA-256: `ba696f39f3838c03167fab65900a964b23d41a2c6b2488216353f3c687ebded3`
`font_02_sfnt_off00011da3.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11DA3	11288 bytes
SHA-256: `4cbcc42e8416405485135899025737d86538cb8e1525be7ffe721ef27e8899ef`

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