Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0b724ee861c93d2…

MALICIOUS

PDF

50.7 KB Created: 2020-09-30 22:56:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: d29b6ea80f06534bffa72dc7c9aa9f21 SHA-1: d32ba5317c180e797681373804e08c9c8dffb8d9 SHA-256: e0b724ee861c93d27e0612cbfbb177314723c5a3c481d12bafe24878bdfbef60
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to suspicious domains and are likely part of a link farm designed to host malicious content. One critical heuristic identified a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains references to URLs that are likely used to redirect users to malicious sites, potentially for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://cctraff.ru/strik?keyword=apsa+80+pdf+in+hindi+download In PDF document text
    • http://files.bkleonardlaw.com/uploads/1/3/0/7/130776446/rozurine_fozagox.pdfIn PDF document text
    • http://files.developingamerica.org/uploads/1/3/2/8/132815123/5e0f91f801.pdfIn PDF document text
    • http://files.sagetoseadesigns.com/uploads/1/3/0/8/130814121/bofajij-jusovifejewamab-mipevulaze-pafolekaki.pdfIn PDF document text
    • http://tuvabo.fionaklau.com/uploads/1/3/2/6/132681947/nikumumazujikup_gedak.pdfIn PDF document text
    • http://files.babybulldogs.org/uploads/1/3/1/3/131379828/3060486.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://uploads.strikinglycdn.com/files/e53bd441-fd8d-45f1-b902-875cf1b4d051/5056424838.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8e8b768d-e400-4326-b9d7-7d9c3ef88070/derurajalu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2b7fb3f7-6690-4c41-9b4a-1e1b582edf45/sabesigazusasafo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0452/5296/8609/files/bose_soundbar_300_user_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5762/4726/files/39229878080.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5840/5275/files/piano_duet_sheet_music_classical.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4281/5643/files/principles_of_electric_circuits_9th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5244/9435/files/cartoon_movie_free_300mb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2739/0887/files/9101304754.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
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006363.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6363 5452 bytes
SHA-256: c3a3e318bd318b7ba647069039ba02d7efc74765812f9ee857fc7fb3ee7d2ea2
font_01_sfnt_off000075f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75F7 3720 bytes
SHA-256: 40ef96da86b6123d577d475be460de15c41b9ca7393a8e650be4e9942aa3c64b
font_02_sfnt_off00008159.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8159 10412 bytes
SHA-256: 3be1f11d1028aa2f9180dfb40e473138ae18962a9e4ae49bea7d328be3e42cb3
font_03_sfnt_off0000a518.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA518 7172 bytes
SHA-256: 28f873addfe979f5d50a9003d3d2e88ec41192033ddf27d05c15b52cacbc4491

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