Malicious PDF — malware analysis report

Static analysis result for SHA-256 543c834ef75bb323…

MALICIOUS

PDF

91.2 KB Created: 2021-03-27 22:16:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 81f09ae45a01e73e9d1167522421ee4a SHA-1: 6766afa021f4c5ca821bef8e8a73cee2f777b275 SHA-256: 543c834ef75bb3234aca2513327c0ce5b3311b62623a7739f7f5fe9751b5eddf
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site. The document body, though heavily obfuscated, appears to be a lure related to search results.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 4

  • 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/wix?keyword=anneliese+michel+transcript+deutsch
    • http://bilabugova.iblogger.org/kunudedejarumidujo.pdf
    • http://kushtanash.ru/buddhism_books_amazon67b5l.pdf
    • https://cdn.sqhk.co/tazifawixax/ijjjfja/290890131.pdf
    • http://mipefukonuvav.iblogger.org/tamil_old_melody_audio_song.pdf
    • http://mon-cmso.best/hansel_and_gretel_film_netflix2q5z3.pdf
    • https://cdn.sqhk.co/mawodoso/fowjcgi/navijowijukesi.pdf
    • http://creditstar-kabinet.com/webovazkn5cp.pdf
    • https://cdn.sqhk.co/girolivudafo/86ijAnq/zidoxanufasakalax.pdf
    • http://duperalenow.22web.org/canon_ds126_151_specs.pdf
    • https://cdn.sqhk.co/noruwotil/KiahaVU/watejiredapefozafiji.pdf
    • https://cdn.sqhk.co/mevazasid/iie9ijW/servpro_mold_prices.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://645c32c3-7e99-4959-b93b-7980205539d7.filesusr.com/ugd/30a31c_41d3bbf090f44374a43103d4da64b76b.pdf?index=true
    • https://s3.amazonaws.com/mokixetat/gosudaredoba.pdf
    • http://vimitafukufes.rf.gd/pixamumofajovada.pdf
    • https://s3.amazonaws.com/nademopor/app_store_apk_free_fire.pdf
    • https://1cbf0fd9-62af-4102-a3dc-982f361539e7.filesusr.com/ugd/bfbc46_f61342e5961d4862b7606d970fa2cf38.pdf?index=true
    • https://s3.amazonaws.com/tomaxade/vesibebukerajafinedeli.pdf
    • http://nupadamemal.epizy.com/70457154625.pdf
    • https://0491f86b-060d-4f4a-be23-b0d01488777f.filesusr.com/ugd/faa7ef_a86c8ae046f04f218e44b0783eb730c0.pdf?index=true
    • http://mapexas.epizy.com/42424466112.pdf
    • https://s3.amazonaws.com/vinejivunitego/dofinofezetag.pdf
    • https://s3.amazonaws.com/gadumagabusodel/minus_numbers_worksheet.pdf
    • http://badugumafuzalij.rf.gd/ralph_ellison_invisible_man_analysis.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_off00012583.bin
d628daf11eefa5d5317bb3fcabe50ed5f2ae0dab859f195fcaae2392301aa632
pdf-font-stream PDF embedded font (sfnt) at offset 0x12583 5300 bytes
font_01_sfnt_off0001375b.bin
dc665a04abee7f2ac7fbf6bfd9f061901c5d45518d0e6a5070438ffa1e8b10e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x1375B 11924 bytes