Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba968d10b940551d…

MALICIOUS

PDF

97.5 KB Created: 2021-04-06 20:17:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 7c883d1aee3ca08fe56d11c4f8265960 SHA-1: 260a0eb99e3d8e82982eff88e1e0bc9202916362 SHA-256: ba968d10b940551d609ac2f14bf30a1b1363bdd93218c6e0857f8b5e28e8d64f
186 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many pointing to disposable domains, suggesting a link farm or SEO spam operation. The document body mentions 'Banting grocery list pdf', a common lure for phishing or malicious redirects. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution via these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://lozipotod.ru/award?keyword=banting+grocery+list+pdf PDF link annotation
    • https://cdn.sqhk.co/nexetifosam/duH9jig/history_and_history_of_art.pdfIn PDF document text
    • https://cdn.sqhk.co/tazifawixax/cjgajdW/17944303403.pdfIn PDF document text
    • https://cdn.sqhk.co/gonolesuzam/40xvaHe/7809047873.pdfIn PDF document text
    • https://cdn.sqhk.co/jibezilesu/jCjbjh0/free_computer_learning_classes.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416318/normal_6001e63b129e6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369788/normal_5ff5c3f0599f1.pdfIn PDF document text
    • https://cdn.sqhk.co/lekibapufe/e4Kh4JS/view4view_pro_apk.pdfIn PDF document text
    • https://welavomuwaj.weebly.com/uploads/1/3/4/6/134633166/c38261bd3d1d1c.pdfIn PDF document text
    • https://pufodafu.weebly.com/uploads/1/3/5/9/135959320/pimufum-dagoteli-degomenezim-sivisuboj.pdfIn PDF document text
    • http://texegevesimiruv.22web.org/ib_hl_biology_book.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/kalanejaxutilif/concepts_of_biology_review_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/pegek/ap_psychology_exam.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/06e0bb6a-8227-40db-a341-31f19387319d/how_to_insert_citation_in_ms_word_2007.pdfIn PDF document text
    • http://golilamim.epizy.com/valvular_heart_disease_esc_2020.pdfIn PDF document text
    • http://bisumige.epizy.com/bayesian_networks_in_r_springer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6d0895c9-9a10-4ac4-b530-0a92a3292437/26962248903.pdfIn PDF document text
    • https://s3.amazonaws.com/gulapore/m-audio_axiom_pro_25_key_midi_controller.pdfIn PDF document text
    • http://namofigironebej.epizy.com/mapa_metro_sp_2020.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_off000132d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x132D1 5264 bytes
SHA-256: 1096df4b362e9634075a1aa138d6648d696aadbeae566b1e702efb8bb74e4247
font_01_sfnt_off000144c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x144C1 11088 bytes
SHA-256: 315b5745d8510a559d4374cacf58e23b2b89a145937765b669cf1a89ff6099ec
font_02_sfnt_off00016a63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16A63 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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