Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e0ce996ca41b136…

MALICIOUS

PDF

75.3 KB Created: 2021-04-17 18:52:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e613b86eac0034190fd5567127989d0b SHA-1: 48c17db5b857e74d75b4f3f57357d00ce0cd5da0 SHA-256: 1e0ce996ca41b13628ebcc6da87e2660f122ea20280140496709c397cb1e25d6
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded external URI pointing to 'jumiwimov.ru', which is a strong indicator of a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure itself facilitated the embedding of this malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://jumiwimov.ru/strik?utm_term=atwood+rv+furnace+limit+switch+location
    • https://cdn.sqhk.co/rorazelesu/es0getS/45517292764.pdf
    • https://cdn.sqhk.co/tefozakozup/qtdghgh/plex_windows_app_slow.pdf
    • https://nifisutabunus.weebly.com/uploads/1/3/4/6/134634245/nejuzabef.pdf
    • http://unlockdeals.shop/english_words_and_their_meaningq2w6w.pdf
    • http://forovasax.medianewsonline.com/113393523.pdf
    • http://wudaxozibutix.sportsontheweb.net/77782358737.pdf
    • https://cdn.sqhk.co/foxidagon/wigHhgh/vector_security_reviews.pdf
    • https://cdn.sqhk.co/bazexolareja/i6Njdhb/13373273823.pdf
    • http://autobuff.xyz/14740586626rdqe6.pdf
    • http://sokfresh.fun/bsnl_recharge_plans_mpaugni.pdf
    • http://marketitaly.pro/17523190696xjgfq.pdf
    • http://idealica-ufficiale.site/human_factor_theory_of_accident_causation9i1in.pdf
    • https://tajonerimokop.weebly.com/uploads/1/3/4/8/134879789/sevosak.pdf
    • http://fogejebimo.scienceontheweb.net/zivuzalejukorirumijefupaw.pdf
    • https://werakemil.weebly.com/uploads/1/3/5/9/135973214/5917166.pdf
    • http://idealsit.space/titration_of_aspirin_lab_report_conclusionahtdo.pdf
    • https://jawoxufogor.weebly.com/uploads/1/3/6/0/136022219/tojinatimowej-tumeb-jolelepaf-xadomekadonuda.pdf
    • http://modezewop.mygamesonline.org/89958484765.pdf
    • https://cdn.sqhk.co/tipefima/bggdjI4/jumanji_epic_run_mod_apk.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/857ff067-efec-4814-93d6-9280dab149b7/what_is_the_highest_ar_level_genshin.pdf
    • https://uploads.strikinglycdn.com/files/e280f915-70c8-4054-97f5-761ce240ef13/definition_of_progressive_education_theory.pdf
    • https://uploads.strikinglycdn.com/files/5ef82404-367f-4b02-82cd-c51481f5ecd6/54308054260.pdf
    • https://uploads.strikinglycdn.com/files/924a2c96-ffa7-417a-a1be-557baeedff6a/ch4__2o2_co2__2h2o__energy.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_off0000e8b9.bin
8284c8bb34d2dc9108499322ca334a3cf9d78419bf5d7fabe70655e591fc222b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE8B9 5400 bytes
font_01_sfnt_off0000fb08.bin
1f57a3f9089678c0ff178ae0f4c16714af4b1cfb33d3135d3f17263b23f6d314		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFB08 10616 bytes

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