Malicious PDF — malware analysis report

Static analysis result for SHA-256 09c6ef021b5add6d…

MALICIOUS

PDF

88.5 KB Created: 2021-03-29 14:51:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8550f9f694f1b83b6cdf002931a6f3f5 SHA-1: 5b4485488338f0ab34ffa7b62c4629df5996fd44 SHA-256: 09c6ef021b5add6d025347b4f8868f3a8150c75658e4f7e7fe73dd8798984685
196 Risk Score

Malware Insights

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

This PDF document exhibits characteristics of an advance-fee scam, leveraging lures related to lotteries, prizes, and parcel delivery requirements. It contains a large number of external links, many of which are suspicious, suggesting a link farm or redirection mechanism. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to redirect users to phishing or malware distribution sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9967

Heuristics 6

  • 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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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://pelibifir.ru/wix?keyword=gloria+bora+kim
    • http://present-mag.ru/83208809841kbomn.pdf
    • https://xuvajova.weebly.com/uploads/1/3/1/3/131380845/4006046.pdf
    • http://crubr.space/21953550558fwis9.pdf
    • http://eagleaff.com/what_does_gender_fluid_mean_sexuallyoifqj.pdf
    • http://parhelifrl.space/ibm_aix_7._1_tlxg6j3.pdf
    • http://fsbsiod.com/71045789603wudsi.pdf
    • https://pesawuzopedeg.weebly.com/uploads/1/3/5/3/135327269/rebatow-nafajogefupo.pdf
    • http://useporte.xyz/inductive_and_deductive_reasoning_quizx1vj3.pdf
    • https://raguwagoneneza.weebly.com/uploads/1/3/1/3/131384547/f985f644.pdf
    • http://flathead.us/average_household_income_winnipeg_2017ejdcg.pdf
    • http://leqqurint.online/bachelor_party_songs_free_123musiqrgqai.pdf
    • https://bivorafonesakal.weebly.com/uploads/1/3/6/0/136021739/vokufetukujixefato.pdf
    • http://testrun.ru/lezovajoliweluwazulozyc1p.pdf
    • http://storergoods.site/big_green_egg_extra_large_sizecs5bh.pdf
    • http://leftoutclub.com/povanidc6jy5.pdf
    • https://gavedomosuzutu.weebly.com/uploads/1/3/4/2/134234743/lefakuwi.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/595872fe-2b84-4964-9aaa-a2ca3680aeee/how_to_connect_fios_remote_to_samsung_soundbar.pdf
    • https://uploads.strikinglycdn.com/files/593f5839-9fc7-4b84-81ec-2a20f7df429e/46625098620.pdf
    • https://78905da9-dd21-4190-abaa-c894c042e703.filesusr.com/ugd/851c7c_316e503c407f493b84e8fd1608c67470.pdf?index=true
    • https://99516632-72ce-40f3-a9a1-a01c91361c65.filesusr.com/ugd/e42c35_d309bf2dd178427f8c9ab3cb91f8165a.pdf?index=true
    • https://uploads.strikinglycdn.com/files/3dc6a90e-68f9-40b1-8f43-28670e8ee68e/bowflex_exercise_chart.pdf
    • https://1e1f235d-56dd-4976-b20d-d38e3fe7b172.filesusr.com/ugd/210b45_c9d35f5ec5f64d45864197e16d3d4fd8.pdf?index=true
    • https://9de673a2-3b8e-40eb-bbf5-c0ad8e71a3da.filesusr.com/ugd/bd5c68_a48960df92b7413496548f6f602e66ed.pdf?index=true
    • https://uploads.strikinglycdn.com/files/4720b4bf-da31-4e14-a36d-fa3899ab7859/the_count_of_monte_cristo_1975_full_cast.pdf
    • https://uploads.strikinglycdn.com/files/8cc1571b-9d30-4883-afdb-34f0f992e7d5/50348181490.pdf
    • https://e5447efa-8854-4d04-834e-f0bbd7438c8b.filesusr.com/ugd/ac612b_6b044d201c594752a8c8cc33dcfc4f97.pdf?index=true
    • 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_off00011ee8.bin
5e1136c6057af882ee75c4550352ad8021d87096640a4de92da6ea5aa09623d8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11EE8 4888 bytes
font_01_sfnt_off00012f77.bin
cda39312a4b72fc48812ea2cc33037ea10ac8015442d9b6c59990e0768a906b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12F77 10384 bytes

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