Malicious PDF — malware analysis report

Static analysis result for SHA-256 e202776758c43219…

MALICIOUS

PDF

70.7 KB Created: 2021-03-11 15:05:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 454fba70c46cfd2ff4922667622a628a SHA-1: 2ce8a71b4a83d91c389c65fb7c6adfa5ed5cb52f SHA-256: e202776758c43219fbdb252de000d9cfefb5e9b7e46c45e0090c880525e8b4d9
186 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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 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.
  • 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://jumiwimov.ru/award?keyword=aashto+m288+pdf PDF link annotation
    • https://cdn.sqhk.co/gadewekunel/imhjdjh/learn_to_speak_spanish_free_online_course.pdfIn PDF document text
    • http://jinobuzid.scienceontheweb.net/50922667526.pdfIn PDF document text
    • http://nitiwopororotef.mypressonline.com/tuwasepopuludumu.pdfIn PDF document text
    • http://mugukix.mygamesonline.org/feng_shui_2020_for_pig.pdfIn PDF document text
    • https://cdn.sqhk.co/fegujajox/YqhiicZ/wordbrain_2_occupations_level_4_3x3.pdfIn PDF document text
    • https://cdn.sqhk.co/komajekolino/mMQjhhd/light_up_mirror_for_bathroom_wall.pdfIn PDF document text
    • https://cdn.sqhk.co/javeduner/fjjihhi/nickelodeon_super_brawl_universe_apk_download.pdfIn PDF document text
    • http://wiinorama.fun/char-broil_the_big_easy_tru-infrared_smoker_roasterzzucz.pdfIn PDF document text
    • https://vixalabalu.weebly.com/uploads/1/3/4/3/134396729/32dd16c73c3.pdfIn PDF document text
    • https://cdn.sqhk.co/nogorodizet/egigj9S/love_coloring_pages_pinterest.pdfIn PDF document text
    • http://navalny.design/tutajafokafijzyyc.pdfIn PDF document text
    • https://femobideja.weebly.com/uploads/1/3/4/7/134735935/1063064.pdfIn PDF document text
    • https://batigagonu.weebly.com/uploads/1/3/4/7/134774980/de810.pdfIn PDF document text
    • https://cdn.sqhk.co/wexunaveb/ijMvd0j/dominos_deals_hawaii.pdfIn PDF document text
    • http://idealica-uficiale.website/72977222406007kr.pdfIn PDF document text
    • https://bogatawokajo.weebly.com/uploads/1/3/4/9/134900502/kalaber.pdfIn PDF document text
    • https://cdn.sqhk.co/falugojafat/Ygijdic/starfish_sushi_opening_hours.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/pekatikisuruki/bilateral_hemianopia_case_report.pdfIn PDF document text
    • https://s3.amazonaws.com/fejakixoweka/bohol_travel_guide_2019.pdfIn PDF document text
    • http://roporuti.onlinewebshop.net/72964826270.pdfIn PDF document text
    • http://zogosugo.onlinewebshop.net/92609212293.pdfIn PDF document text
    • https://s3.amazonaws.com/womirofop/bezuri.pdfIn PDF document text
    • https://s3.amazonaws.com/fokapikow/tinoxixekevixoxijares.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d7f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7F1 5468 bytes
SHA-256: 15ce86f1f134612e2261270bb95b4d093e8ac568dd94778d3956a31d87e9261a
font_01_sfnt_off0000ea6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA6F 10412 bytes
SHA-256: 18126f974472b01e53eeb02cf03405a4141f7b7eb49c8523fc176727ef4b1028

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