Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ab400a2485e5fa1…

MALICIOUS

PDF

69.7 KB Created: 2021-05-06 04:04:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aa101b96d215294e7cf32467f7bd8875 SHA-1: d235afe3f3118b839d90a03684ab4dd262b7ba83 SHA-256: 3ab400a2485e5fa1ba7fdf76a72ca184bf8e47eaa4b9353a9524afae2ccd3be0
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link farm heuristic, indicating it's designed to host numerous external links, likely for SEO manipulation or malware distribution. The ML classifier and ClamAV detection strongly suggest malicious intent. The embedded URL points to a suspicious domain, likely serving as a lure to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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
  • 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://kuzutuzo.ru/strik?utm_term=exemplo+de+relatorio+de+aula+pratica
    • https://karojigulad.weebly.com/uploads/1/3/4/6/134623473/femires.pdf
    • http://podipotekoi.ru/gre_verbal_reasoning_practice_with_answers3ap0p.pdf
    • http://stavki-na-sport.site/25005583514k90l8.pdf
    • http://reduslimitaly-ufficiale.site/what_is_life_in_life_liberty_and_the_pursuit_of_happinesswf1ca.pdf
    • https://fidimamafiw.weebly.com/uploads/1/3/4/6/134624465/81c1dec.pdf
    • https://zaranofe.weebly.com/uploads/1/3/5/9/135967679/6016984.pdf
    • https://lerasakob.weebly.com/uploads/1/3/2/6/132682990/xawemonojizok-baxituxuwu-vuviw-tetarolivoji.pdf
    • http://2220202.ru/krups_sandwich_maker_recipesfrxut.pdf
    • https://gubilipolijig.weebly.com/uploads/1/3/4/7/134707964/ritebunexem.pdf
    • https://guzuwifaxad.weebly.com/uploads/1/3/4/0/134096987/6292590.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/tuxexi/zetitoduzagupamizagoguka.pdf
    • https://s3.amazonaws.com/telasebisu/how_to_reboot_lorex_dvr.pdf
    • https://s3.amazonaws.com/semuxemakaw/46640121770.pdf
    • http://joxepivebafugig.epizy.com/eric_ambler_a_coffin_for_dimitrios.pdf
    • https://s3.amazonaws.com/nijosinizo/how_to_connect_onn_wireless_headset.pdf
    • https://s3.amazonaws.com/satedafadusizo/how_to_use_kitchenaid_food_processor_dicing_kit.pdf
    • http://rolugume.rf.gd/scheduled_caste_list.pdf
    • http://badetez.epizy.com/zewijavisalixuwuzobagez.pdf
    • https://s3.amazonaws.com/nitirew/92566990910.pdf
    • https://s3.amazonaws.com/zubata/how_light_pilot_on_gas_fireplace.pdf
    • https://s3.amazonaws.com/lanaladu/canada_business_corporations_act_form_17.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d02a.bin
4815ce9049e4be565b69abc4a3a05d674275b021be3ffbf1b5a75bd3b9f0ac45		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD02A 5068 bytes
font_01_sfnt_off0000e152.bin
909af1cdd6b28a4c327dab134b9fdf06a52bdb321c5a8bdf074f2d516476518c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE152 12948 bytes

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