Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e3f7d59fba5e0de…

MALICIOUS

PDF

75.4 KB Created: 2021-03-15 23:14:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: db8031a4d84a1d4f651c922257944133 SHA-1: d41552b9a9c33ccba17a3e857239f2537a4314c3 SHA-256: 2e3f7d59fba5e0de3644428fb46419db5522d8ed88b099a18913a6a36eb28897
96 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 document body, though heavily obfuscated, contains text suggesting it is a lure for an 'Irena africa report'. A key finding is the embedded URI pointing to 'https://dafemum.ru/123?utm_term=irena+africa+report', which is likely a phishing or malware distribution site. The PDF structure and embedded content are consistent with a phishing attack delivered via email attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://dafemum.ru/123?utm_term=irena+africa+report
    • https://litiwufedoza.weebly.com/uploads/1/3/0/7/130739575/4e25dddda01dc8.pdf
    • http://jezojarugeboz.22web.org/batched_and_bottled.pdf
    • https://tajonerimokop.weebly.com/uploads/1/3/4/8/134879789/fenonalo.pdf
    • http://xilexevu.scienceontheweb.net/gonibid.pdf
    • http://kavojunulibugo.22web.org/10937379689.pdf
    • https://jasefukop.weebly.com/uploads/1/3/0/7/130776564/sokozuwumezana-lanowilubagek.pdf
    • http://safijejog.mygamesonline.org/numexuxolugozebatefo.pdf
    • http://lebojabufi.medianewsonline.com/zuwikuwopimumojeg.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://pemisikozawefa.epizy.com/club_car_onward_accessories_for_sale.pdf
    • https://s3.amazonaws.com/vukusa/vlookup_example_two_worksheets.pdf
    • https://s3.amazonaws.com/zuponefi/burn_e_movie_free.pdf
    • http://zasegusof.epizy.com/25444454691.pdf
    • http://wirowobizofox.epizy.com/76636694456.pdf
    • https://s3.amazonaws.com/xukonakefules/zisuzegojisebi.pdf
    • https://s3.amazonaws.com/sitok/begging_meme_template.pdf
    • https://s3.amazonaws.com/zafibimutadoti/samsung_hwf550_check_subwoofer.pdf
    • https://s3.amazonaws.com/dagasopones/susagogomimekekegodevar.pdf
    • http://bebokele.rf.gd/84419350136.pdf
    • http://vudexejuvejutek.rf.gd/breakfast_at_tiffany_s_film_script.pdf
    • https://s3.amazonaws.com/jojitagifuva/87762458781.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_off0000ea6a.bin
8f7641f091514b279909132e015ff7b6c2bb8ea1c43a7c5a25b22c984657dbdb		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEA6A 4736 bytes
font_01_sfnt_off0000fa99.bin
0b0bd98bd5c05266fee09319b3fc45277fb4b78a99cd9b413d592ae2ecc2e281		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFA99 11324 bytes

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