Malicious PDF — malware analysis report

Static analysis result for SHA-256 22e032616eb205d1…

MALICIOUS

PDF

73.3 KB Created: 2021-03-19 18:40:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 279f3c6fde0e8304b5ccdbe18c9cca89 SHA-1: b757fad78080651794c27fd5bbf3c0ad900cb207 SHA-256: 22e032616eb205d10fe55515b297863be48e21608cb66e47f8aeaf3bdfe2bdf9
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains a large number of external links, suggesting it is part of a link farm designed to direct users to potentially harmful websites. The presence of embedded URLs and the overall structure point towards a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9952

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://midufefew.ru/aws?utm_term=nintendo+ds+lite+coral+pink+new
    • https://zigapugulila.weebly.com/uploads/1/3/0/7/130776078/lorom_tamabelewuj.pdf
    • https://lapamijivosesez.weebly.com/uploads/1/3/4/5/134507295/6292356.pdf
    • https://gosabejeda.weebly.com/uploads/1/3/1/4/131453015/tufivutizadaz-bidovakojob-ziwuzojunatib-dulomugewuxazur.pdf
    • https://cdn-cms.f-static.net/uploads/4454182/normal_604fc229b2314.pdf
    • https://cdn-cms.f-static.net/uploads/4426571/normal_6017c613452d0.pdf
    • https://cdn-cms.f-static.net/uploads/4420907/normal_604fd4739b9ad.pdf
    • http://filitopalanima.22web.org/backcountry_ski_and_snowboard_routes_washington.pdf
    • https://cdn.sqhk.co/kotolodegag/PjgHhaY/73688881902.pdf
    • https://totijavefukaja.weebly.com/uploads/1/3/4/7/134705726/negiwizujivivus-xulozalazuzu-nopabudibi.pdf
    • https://cdn.sqhk.co/vikafaselida/eMol6P0/house_flipper_mobile_pre_order.pdf
    • https://duwusejirut.weebly.com/uploads/1/3/4/3/134370685/latovip_xuxume_jivefuwejo_folufov.pdf
    • https://keboxineb.weebly.com/uploads/1/3/0/9/130969034/1307ccb1e.pdf
    • https://ninisajata.weebly.com/uploads/1/3/4/8/134869212/vazekeragawonut_jalajoben_dexam_zenotafetozu.pdf
    • https://cdn-cms.f-static.net/uploads/4379842/normal_60170be08208b.pdf
    • https://wigawiwamenusum.weebly.com/uploads/1/3/5/3/135323889/1193968.pdf
    • http://jelabenix.22web.org/hungry_dragon_mod_menu_apk.pdf
    • https://cdn-cms.f-static.net/uploads/4413368/normal_604074fb431e9.pdf
    • https://nepazumikad.weebly.com/uploads/1/3/5/9/135958915/6256134.pdf
    • https://cdn.sqhk.co/soxesemu/ehbegii/dizinewokusud.pdf
    • https://cdn.sqhk.co/notizejamebo/hejbifB/dragon_fighting_snake_tattoo.pdf
    • https://cdn-cms.f-static.net/uploads/4449618/normal_60305a377286f.pdf
    • https://cdn-cms.f-static.net/uploads/4490272/normal_6032549341124.pdf
    • https://cdn.sqhk.co/lupejatuwi/kheggEl/94582649483.pdf
    • https://static.s123-cdn-static.com/uploads/4427498/normal_5ff5b570087dd.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://garapaf.epizy.com/probability_math_questions.pdf
    • http://zotijoxamofos.epizy.com/wtw5000dw1_error_codes.pdf
    • http://sevuvev.epizy.com/vejerew.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000de6e.bin
9e13dc6fc1f9fadb9709375674000034e35328fc8968657b41c5f6a714df9c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDE6E 5192 bytes
font_01_sfnt_off0000f03f.bin
f6f86323f38670391237909f6be60bade94479ae48cf44f0aa498f76bfaff0b8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF03F 10888 bytes

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