Malicious PDF — malware analysis report

Static analysis result for SHA-256 1275db49e584af27…

MALICIOUS

PDF

76.9 KB Created: 2021-02-10 11:29:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: be42a7dc1c281dd8780dc6f668e78cc8 SHA-1: fc6831981f56a14dd293185026ef0c48df021dbb SHA-256: 1275db49e584af278580f0c401afd1f395047618b259eb07feb80cb88b147c96
134 Risk Score

Malware Insights

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

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, many hosted on disposable domains, suggesting a link farm designed to redirect users to malicious sites. The heuristic 'SE_URGENCY_LURE' indicates the document may contain deceptive language to prompt immediate user action.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://druttle.ru/123?utm_term=bernina+1006+manual+free PDF link annotation
    • https://cdn.sqhk.co/sebazisop/gxhbhjV/slither_io_codes_2020_mobile.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421957/normal_6015e3a971380.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4497075/normal_6006e2369e7ad.pdfIn PDF document text
    • https://sirabirimafo.weebly.com/uploads/1/3/0/7/130739431/9165555391.pdfIn PDF document text
    • https://losuwasujiro.weebly.com/uploads/1/3/1/6/131637226/xivop-kepififowi-giwunusuredur.pdfIn PDF document text
    • https://cdn.sqhk.co/kixowijeka/LyQjbgc/chunky_flare_cat_eye_sunglasses.pdfIn PDF document text
    • https://cdn.sqhk.co/tivinarafuvu/fijgcjf/monkey_shoulder_whisky_price_in_mumbai.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4423442/normal_5fceafd89fbbb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415756/normal_6020a8da0b824.pdfIn PDF document text
    • https://wixotavu.weebly.com/uploads/1/3/4/7/134764887/fixisej.pdfIn PDF document text
    • http://eliyalte.com/hovercraft_battle_arena_wikize590.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455894/normal_5fe12552ac82b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452152/normal_600b2f835df1d.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/jubiferekaka/aldehidos_y_cetonas_reacciones.pdfIn PDF document text
    • https://s3.amazonaws.com/fixararololu/sevokum.pdfIn PDF document text
    • https://s3.amazonaws.com/wavunot/cambridge_english_proficiency_2.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

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d599.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD599 2988 bytes
SHA-256: 8b900e382e6879a7ba11c373c98b1c7714d03a7de4053854a5961a94602d6b19
font_01_sfnt_off0000e037.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE037 4824 bytes
SHA-256: 5fce02c9b68340ad84ba4ff2ad5999ea6b70564896a7ac2dc67bd7e0a0e12f18
font_02_sfnt_off0000f06f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF06F 11656 bytes
SHA-256: cbde8c97581048927f343e6eeb988729d48f17b261aabc4f6867cbe1bd92c26d
font_03_sfnt_off000117e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x117E3 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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