Malicious PDF — malware analysis report

Static analysis result for SHA-256 28798cc015a10ba4…

MALICIOUS

PDF

72.8 KB Created: 2021-02-28 14:37:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: c14070a15d4a4e48480a7b08e1773dcc SHA-1: 644bfd96b2c306bfdb90a01a99c6c7e2b5e79365 SHA-256: 28798cc015a10ba42ce8106bf388123754dac66f35c9dfe44ec41278fc98c777
186 Risk Score

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://bologen.ru/award?keyword=que+es+el+liderazgo+transformacional PDF link annotation
    • http://slamelina.website/merge_racing_modpvadn.pdfIn PDF document text
    • https://zorivaleguzovul.weebly.com/uploads/1/3/4/5/134596353/474086.pdfIn PDF document text
    • https://cdn.sqhk.co/zenekukera/icoajft/96276147063.pdfIn PDF document text
    • https://cdn.sqhk.co/xakalodesi/Mehehfw/stickman_falling_mod_apk_android_1.pdfIn PDF document text
    • http://hallop.xyz/grasshopper_sitting_on_a_sweet_potatp8th6.pdfIn PDF document text
    • https://xekukagakodepa.weebly.com/uploads/1/3/3/9/133999272/dofoxepat-robaner-mirapulovewozun-busagak.pdfIn PDF document text
    • http://mebelrostov.ru/adventure_capitalist_support_codesl91l8.pdfIn PDF document text
    • https://cdn.sqhk.co/dimusokobab/ihhSicM/75536634279.pdfIn PDF document text
    • https://jatilupek.weebly.com/uploads/1/3/4/4/134491857/5697328.pdfIn PDF document text
    • https://giximanuv.weebly.com/uploads/1/3/4/5/134526051/sekisuwar.pdfIn PDF document text
    • http://creditreportusa.info/11322135618bv8vp.pdfIn PDF document text
    • https://cdn.sqhk.co/ridijafugemi/Gjchea8/46742769657.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zitadufafasid.onlinewebshop.net/a_christmas_carol_short_version_esl.pdfIn PDF document text
    • http://kobomuxowujuvap.epizy.com/free_editable_family_tree_template_for_ipad.pdfIn PDF document text
    • https://s3.amazonaws.com/xamapebonijos/what_do_the_suits_of_tarot_cards_mean.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_off0000de46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE46 5452 bytes
SHA-256: 8856e6ae8d574ac5b6fa33683fcc574b3416a9d850b5274196b4bafbb5bd36ef
font_01_sfnt_off0000f0c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0C2 10948 bytes
SHA-256: 8187051f79b130bd5e7278434bb4a5276f2744f64b1c4c465d45e301e0637ac9