PDF malware analysis — malicious · 86377f678d28eb61

MALICIOUS

PDF

55.8 KB Created: 2021-03-24 02:10:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 663a655ee90fcefb28bf591369f647e8 SHA-1: e9652280a47c191267a70e03da5754ceba3578d1 SHA-256: 86377f678d28eb61590dcc3d5baa14011aff30121675636c0dca1c9cbb1edd5e

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file was detected as malicious by ClamAV and an ML classifier, and exhibits characteristics of a PDF link farm. It contains numerous external URIs, including one pointing to 'druttle.ru', which is suspicious. The PDF structure and embedded content suggest an attempt to redirect users to potentially harmful websites.

Machine Learning

Nyx PDF Classifier malicious score 0.9703

Heuristics 4

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.
ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
External URI info PDF_URI

PDF contains an external URL action
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://druttle.ru/award?keyword=granada+albeniz+pdf+guitar
- http://everydays.space/reed_plastics_beltsville_mdo8yue.pdf
- https://ponebivilu.weebly.com/uploads/1/3/4/5/134505494/1588939.pdf
- http://bettermoneytips.com/enerpac_porta_power_seth977n.pdf
- http://usesoda.pro/83009854157pghlt.pdf
- https://vuzigalami.weebly.com/uploads/1/3/5/9/135960382/giduxanazogaw_koxulesezutun_pemisuwad_welareweb.pdf
- http://drive4mclaneeffingham.com/barbour_and_wright_keeping_the_republicpm4ye.pdf
- http://sokolov.fun/hinterland_series_4_episode_guidexx3yd.pdf
- https://xoxopurotawasuj.weebly.com/uploads/1/3/4/6/134651309/123e7ae23f2f.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://6acf0ca1-aa41-4771-8b91-54baff69ee7f.filesusr.com/ugd/7d1dc9_9ac436ab32cc416b98ca35f7b00bcc75.pdf?index=true
- https://4b0cdf75-2e42-4830-99f1-bbdbaec3f661.filesusr.com/ugd/891219_026966bad2f54211b4f849a9b5b66f41.pdf?index=true
- https://8e0cabef-d481-4215-b437-8a5fc4e4723c.filesusr.com/ugd/f41140_3f279db70c764638a6e0ef1b335bb9f8.pdf?index=true
- https://45f91bdd-2b68-4e60-ae2c-b14373ae5332.filesusr.com/ugd/0d089b_63e34209c2f2403ea4bda04a654d182f.pdf?index=true
- https://9d349da1-218b-4b59-9e37-2a90cab56d40.filesusr.com/ugd/de9003_b7f3abdfa694489db187827fe30d3d40.pdf?index=true
- https://3465328d-eb21-4af5-a94e-b8fdacefaafa.filesusr.com/ugd/c63bf9_1643b8b48c58497bac77fbc85aba73be.pdf?index=true
- https://6ec3981f-6443-463b-a164-91fc69f101d9.filesusr.com/ugd/7603ae_c649234cd8594be3b15093e868290748.pdf?index=true
- https://s3.amazonaws.com/vizegemawokaxe/free_12_week_weight_loss_tracker_template.pdf
- https://2a497570-3881-454f-aefc-229a18bbdf22.filesusr.com/ugd/83e24f_33e22fa49ffb47fd9c097719162eb210.pdf?index=true
- https://19972ee8-34f0-4900-8009-9f590161cd02.filesusr.com/ugd/64db51_6c52704143b647b183b5ba77339da7fb.pdf?index=true
- https://425e2ee7-996f-4c6d-a593-b44a2a39b733.filesusr.com/ugd/bb05c1_25ea83a3c17c4491a3dc895e07cd6272.pdf?index=true
- https://s3.amazonaws.com/muvarelo/vuzobenap.pdf
- http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000d18a.bin` `33da43f37f90a55e0ee1d2b1f3bf9a30a74da66dc837cc3943ab5b3912804400`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD18A	5252 bytes

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