Malicious PDF — malware analysis report

Static analysis result for SHA-256 57e0c088f09691a2…

MALICIOUS

PDF

83.1 KB Created: 2021-03-15 01:27:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: ce9f265f08c72047cd7dc45c6d386926 SHA-1: 6b529c1425910623ea1af0723fb03fa36c1adc88 SHA-256: 57e0c088f09691a2c631e22a2af9840d51f7dd0702bb3421f4e4c548312d39f3
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs pointing to disposable hosting, and a heuristic identified it as a link farm designed for SEO manipulation. ClamAV detected it as Pdf.Phishing.Trojan, and ML classifiers also flagged it as malicious. The presence of embedded URLs and the link farm heuristic suggest the document's primary purpose is to redirect users to potentially malicious sites, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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 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.
  • 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://seumenha.ru/wix?keyword=battle+queen+2020+cast PDF link annotation
    • https://cdn.sqhk.co/dosoxupivaka/3hhfYWO/manik_2005_bengali_full_movie_free.pdfIn PDF document text
    • https://fulipevaxavu.weebly.com/uploads/1/3/2/6/132695351/bcd03.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378151/normal_5fe6f2ebbae46.pdfIn PDF document text
    • https://cdn.sqhk.co/zowonefaso/hdjgNjf/bedonu.pdfIn PDF document text
    • http://masovizifuzaro.iblogger.org/12390834863.pdfIn PDF document text
    • https://cdn.sqhk.co/kefivaxepaj/dibhwif/egg_wars_minecraft_download_free.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379964/normal_6040dd43799ef.pdfIn PDF document text
    • http://rerikadarax.iblogger.org/61691522477.pdfIn PDF document text
    • https://cdn.sqhk.co/tirekidifole/aTiejiw/pirazolevapoberetezuvotu.pdfIn PDF document text
    • https://dudunetexuzo.weebly.com/uploads/1/3/1/3/131379759/balevoxononem-savipunaxegu.pdfIn PDF document text
    • https://lajizifoposu.weebly.com/uploads/1/3/5/9/135958207/3def60f683619.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4499341/normal_5fca34e756d12.pdfIn PDF document text
    • http://tijukilebag.getenjoyment.net/a_series_of_unfortunate_events_the_reptile_room_book_review.pdfIn PDF document text
    • https://cdn.sqhk.co/dajusonas/icuAagi/53592822804.pdfIn PDF document text
    • https://pasuliwipo.weebly.com/uploads/1/3/1/4/131452824/8b0f7d845.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471250/normal_603e1ac2bfa2b.pdfIn PDF document text
    • https://xokefazekuli.weebly.com/uploads/1/3/5/9/135992394/4948364.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
    • http://fedonefekipide.myartsonline.com/24321721481.pdfIn PDF document text
    • http://xezaretidatoro.onlinewebshop.net/islamic_calendar_2020_pakistan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/29cce6bd-efcb-4e0b-9a05-71c629cf004a/coast_guard_height_weight_chart.pdfIn PDF document text
    • http://kikexufan.epizy.com/samsung_vrf_catalogue.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cbc7a89f-21bc-49c2-99ed-39c263cc7dd2/tategitijojotelidibazaw.pdfIn PDF document text
    • http://vumamuv.myartsonline.com/sixixusowoxisipugo.pdfIn PDF document text
    • http://rugilunu.epizy.com/what_a_woman_lyrics_vaya_con_dios.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1a01b077-e2b3-4b34-ae50-c2a27daef81a/77153352621.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fb0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB0B 4872 bytes
SHA-256: b2ccb4ed695aa171cdc4e0222c3264b59def8cc422bab7bcf45e22015aa01f97
font_01_sfnt_off00010baf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BAF 11224 bytes
SHA-256: 899dc63b92c399e58f567f859fcaf8772cf74eb104fe426f49200f6dfa03d792
font_02_sfnt_off00013192.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13192 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c