Malicious PDF — malware analysis report

Static analysis result for SHA-256 13482e74aefb696e…

MALICIOUS

PDF

69.1 KB Created: 2021-03-14 20:51:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7f972c8e0f0880bc0255faef36e4c13e SHA-1: a9ad73c45992e5b0582bb612f6d207b7fe2c2e78 SHA-256: 13482e74aefb696efa1c81d10b748aa3b530b8372f788d32cc3d9a1f67cdee4f
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. An external URI pointing to 'lozipotod.ru' was extracted, which is likely used to host a malicious payload or phishing page. The document body, though heavily obfuscated, contains text related to a worksheet, suggesting a social engineering lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://lozipotod.ru/wix?keyword=thinking+like+a+scientist+worksheet+answers
    • http://pufivuziviv.mypressonline.com/poiquilocitosis_y_anisocitosis.pdf
    • http://wumewil.sportsontheweb.net/anthropology_books_for_ias.pdf
    • http://joy-todays.online/73216585535pnev8.pdf
    • http://xavukagidasali.iblogger.org/asvab_review_book.pdf
    • http://shishkin-seed.xyz/elipse_ejercicios_resueltosn6r46.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/xixonu/dumanalof.pdf
    • https://uploads.strikinglycdn.com/files/85ee07c1-ce29-40b5-a475-46c17e068daa/44568962678.pdf
    • http://demunoj.epizy.com/75959513174.pdf
    • https://uploads.strikinglycdn.com/files/807c2560-2339-48ff-b968-35156e588913/23324978081.pdf
    • https://cf336f9a-6a79-4542-9269-5b62d6eb69dd.filesusr.com/ugd/1daf83_2119c7d96b034ebda4bca7a8e482f499.pdf?index=true
    • https://0b609444-e5a2-4a7e-9779-a3c6bae51a53.filesusr.com/ugd/529dbf_9ca563980a884341a22bf0011f34fa8a.pdf?index=true
    • http://gojejamajutemus.epizy.com/72689917661.pdf
    • https://s3.amazonaws.com/gumegulaxi/lonavamiwupalemam.pdf
    • https://uploads.strikinglycdn.com/files/64810b1e-97d2-45db-af85-58adb4899528/63845983788.pdf
    • https://2a497570-3881-454f-aefc-229a18bbdf22.filesusr.com/ugd/83e24f_ffcf20bfe2994620ababfac5cc518556.pdf?index=true
    • https://s3.amazonaws.com/xupovobejanam/77566792774.pdf
    • http://wavusuwu.epizy.com/auralux_constellations_apk_mod.pdf
    • https://uploads.strikinglycdn.com/files/8192946d-4e71-4570-bea6-fe5283146a32/fugoba.pdf
    • https://01dc7cc6-b8ed-446e-8cc8-1ad78882ed38.filesusr.com/ugd/e23fbb_82bc4fb1e3ae40b5a5d27585de32b70f.pdf?index=true
    • https://s3.amazonaws.com/bulikowexunepov/l_aveuglement_livre.pdf
    • http://xapimiwosusuv.epizy.com/caller_id_faker_apk_free.pdf
    • https://uploads.strikinglycdn.com/files/2b24e7d2-3add-4ba5-b6aa-263c8f9e66c4/xaraneje.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_off0000cf81.bin
da772ebcac1eae1b40ab6d345066a1bb0c5ad95a326b509b4abe429b99bd7e65		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCF81 5164 bytes
font_01_sfnt_off0000e124.bin
3c64e914ae8f2f68a7c76a45c3d7cefc1f5fac982b15112e52106b828e61688b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE124 10596 bytes

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