Malicious PDF — malware analysis report

Static analysis result for SHA-256 1da069156b8f618c…

MALICIOUS

PDF

79.1 KB Created: 2021-03-15 10:08:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: 884ef368fc426cfb0fc50c4d0a3d1141 SHA-1: aebf4ed2e6e01e4171b8037fa51e6dd39e52eb4d SHA-256: 1da069156b8f618c046a28b934891b44debb6144fd99bc48735de9d0d6064049
186 Risk Score

Malware Insights

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

The sample was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm designed to redirect users to potentially malicious content or phishing sites. The primary URL identified is `https://resalured.ru/wix?keyword=kingdom+hearts+birth+by+sleep+manga+read+online`, which likely serves as a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9967

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://resalured.ru/wix?keyword=kingdom+hearts+birth+by+sleep+manga+read+online PDF link annotation
    • http://jofifuneku.medianewsonline.com/51282962035.pdfIn PDF document text
    • https://cdn.sqhk.co/salobosemiv/nqhjyii/torque_burnout_unblocked.pdfIn PDF document text
    • https://cdn.sqhk.co/fufigavaki/Qiclwt6/mutidago.pdfIn PDF document text
    • https://cdn.sqhk.co/pijujuweg/hbNZjhN/metal_commando_squad_metal_shooter_mod_apk.pdfIn PDF document text
    • http://mebesovinu.22web.org/11005839991.pdfIn PDF document text
    • https://cdn.sqhk.co/mojikeke/bgejjvs/the_walking_dead_a_new_frontier_walkthrough.pdfIn PDF document text
    • http://govuled.mywebcommunity.org/alzheimer_maladie.pdfIn PDF document text
    • http://sesesuruko.mypressonline.com/bissell_powerlifter_powerbrush_not_picking_up_water.pdfIn PDF document text
    • https://cdn.sqhk.co/norowitidot/ggAibij/82600566660.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://8ed62699-7d02-4439-b935-4286882ef7d4.filesusr.com/ugd/229b11_612afb16c4b24510a26181138a6c48a1.pdf?index=trueIn PDF document text
    • http://kawerulim.onlinewebshop.net/77136215962.pdfIn PDF document text
    • http://vimitafukufes.rf.gd/8000682692.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/829e132d-644c-4cea-ac61-ce87d03b8c0a/38685096440.pdfIn PDF document text
    • http://velumosak.epizy.com/feeling_alone_quotes_images.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/df83f639-dd6a-430b-9b0d-9c00128d2311/what_age_are_bob_books_for.pdfIn PDF document text
    • http://nexovototato.epizy.com/jataterif.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a4de33f5-701c-46a6-9cae-56e18e95df78/pevebibavipunolon.pdfIn PDF document text
    • http://desorebo.epizy.com/xenelubozadakomadokenexa.pdfIn PDF document text
    • https://1350f94c-8d6f-42b4-8351-24983ad6a49a.filesusr.com/ugd/4aae87_960ba665770c401a958c82201b6b549e.pdf?index=trueIn PDF document text
    • https://368051e9-4199-40ea-b9a2-dc6e6f83cb3b.filesusr.com/ugd/6260fe_051212c9b424421499142ca155a96171.pdf?index=trueIn PDF document text
    • https://104e0e48-a4c2-4a03-8647-06ef64d4e6ac.filesusr.com/ugd/e2c6c1_6fff08deb35942a48afa877ecbe7de29.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/6bbaba1b-c66c-404c-93fd-dcbec2abbf27/vodedegusafen.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/64fd4ea2-1153-4bea-8662-4845577edbf9/what_is_a_behaviour_support_plan_in_childcare.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/01c48782-eb17-439f-87e2-8c4ff788a22d/united_colors_of_benetton_ads_analysis.pdfIn PDF document text
    • http://kapirexazi.onlinewebshop.net/maus_analysis_sparknotes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0c14c369-4eae-492c-bc18-df2044719e4d/klipsch_r-10b_tv_remote_programming.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f5d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5D1 5584 bytes
SHA-256: 0c6b053dc8d5a1ec051c141e5c2d1700da6c26f729bb23fd31102f5b35b7bb50
font_01_sfnt_off000108a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108A7 11160 bytes
SHA-256: f609eed6faa788d60d135e4a493ab29c3a8141c3b4ffa53cb37e5f012c79c870