Malicious PDF — malware analysis report

Static analysis result for SHA-256 071337d050a09acd…

MALICIOUS

PDF

90.3 KB Created: 2021-04-14 08:07:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3cc365146b1c49273d736fc11b67ff12 SHA-1: 7216d55f493221dff1011c0e3abd2e242eaaf97d SHA-256: 071337d050a09acd6657b8499a22a5ea157aba92bce3d917ad5a3158a7154273
166 Risk Score

Malware Insights

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

The PDF document is flagged as malicious by ML classifiers and ClamAV, and exhibits characteristics of a password-protected archive lure. It contains numerous external URIs, many pointing to disposable hosting, suggesting a phishing or malware distribution attempt. The document body, though heavily obfuscated, appears to be related to business plan templates, aligning with the password-protected archive lure heuristic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://dugedepap.ru/strik?utm_term=plantilla+plan+de+negocios+excel+mexico
    • https://cdn-cms.f-static.net/uploads/4414153/normal_6050c6d28d5e6.pdf
    • http://se-mrush.com/fafuzanofugola45e5h.pdf
    • http://bettermoneytips.com/an_prc-152_technical_manualrlii5.pdf
    • http://pegijegur.mygamesonline.org/vefojuguditom.pdf
    • http://wudenufodoroziv.scienceontheweb.net/list_of_important_days_in.pdf
    • https://cdn-cms.f-static.net/uploads/4475989/normal_60325c879049b.pdf
    • http://bitcoinchat.fun/kureviredovokem2ec.pdf
    • https://cdn-cms.f-static.net/uploads/4495531/normal_6012ada8bf90a.pdf
    • http://copyrightsupport-ig.com/dynamics_365_customer_engagement_licensing_guide4e3hi.pdf
    • https://cdn-cms.f-static.net/uploads/4410217/normal_602738a8676d8.pdf
    • https://cdn.sqhk.co/wigalefu/ojjbhcg/51299387515.pdf
    • https://cdn.sqhk.co/giruzegovu/ljhLjd3/gatejubesafu.pdf
    • https://cdn.sqhk.co/nuzozuni/05mifhf/99368645882.pdf
    • http://ostanni.fun/craftsman_1_2_hp_garage_door_opener_drive_gearze9ms.pdf
    • https://cdn.sqhk.co/gugirejol/0WiajcL/happy_wheel_games_to_play.pdf
    • http://brumbum3.xyz/96309760016q1q7b.pdf
    • http://cardioactiveitalia.site/ryobi_leaf_blower_40vplb3w.pdf
    • https://cdn.sqhk.co/merojuniv/e4G1jip/wexujesuta.pdf
    • https://static.s123-cdn-static.com/uploads/4376087/normal_5ff8973a23706.pdf
    • http://salea.site/49810915329oegos.pdf
    • http://fontawesome.iohttp://fontawesome.io/license/
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/f957b0e1-6784-4e7a-baf5-9069b44834f2/harman_p61a_pellet_stove_for_sale.pdf
    • https://uploads.strikinglycdn.com/files/aadee219-7edf-4392-bbdd-8211ea8077a8/82137785239.pdf
    • https://uploads.strikinglycdn.com/files/e448ce65-62e3-46c5-a541-c946e5794a46/3371777423.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000116c9.bin
787533c3313f27dccf155bf9565a56db07dac37d6a11b72542c6a50c068acf74		 pdf-font-stream PDF embedded font (sfnt) at offset 0x116C9 1724 bytes
font_01_sfnt_off00011f25.bin
c56d3a10287adc437376f849039f0c9373f05cfaad98adbc44abba8fcfa42213		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11F25 5364 bytes
font_02_sfnt_off0001315e.bin
55571c59c8e9a52efd3165229ed5ea1b62add79ef91f2c0af519ffda34c9d6be		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1315E 12224 bytes

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