Malicious PDF — malware analysis report

Static analysis result for SHA-256 765e295a1fdb8646…

MALICIOUS

PDF

86.8 KB Created: 2021-04-06 22:52:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2bdb53e81f8a6c8471fcb72d7351281f SHA-1: da4ee3d141b6a96b94d8d3b6bcc818a9fcd15746 SHA-256: 765e295a1fdb8646cdc1ef5ba08110017c8f5bec36873d9f78c7e9d571470bb8
96 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a machine learning classifier and ClamAV, indicating malicious content. It contains an embedded URI pointing to a suspicious domain, likely intended to trick the user into downloading further malware or phishing for credentials. The document body, though heavily obfuscated, suggests a lure related to a book title, which is a common social engineering tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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/award?keyword=old+man+and+the+sea+pdf+text
    • http://mozobadijoba.medianewsonline.com/make_your_home_among_strangers_discussion_questions.pdf
    • http://hayatevesigar.online/fipobojuvumepawolobabw2oi.pdf
    • http://demask.space/macbeth_free_with_line_numbersx73hn.pdf
    • https://cdn-cms.f-static.net/uploads/4377098/normal_601f6aeb71784.pdf
    • https://cdn-cms.f-static.net/uploads/4426812/normal_602f3dee55461.pdf
    • https://cdn-cms.f-static.net/uploads/4409630/normal_600e028ff102b.pdf
    • http://airbin.top/the_last_song_miley_cyrus_and_liam_hemsworth105e3.pdf
    • http://tendernes.ru/5006782088728gyl.pdf
    • http://gofadivus.mygamesonline.org/puvuvubisaj.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/5f100bf3-8397-4f12-bb96-0dcc022f9f3c/osi_7_layer_model_examples.pdf
    • https://uploads.strikinglycdn.com/files/275408c4-d9c8-4fdd-afa4-3a0f2fc9f0b9/38305426131.pdf
    • https://s3.amazonaws.com/wolina/how_many_i_am_in_john_gospel.pdf
    • https://s3.amazonaws.com/gopifu/accelerated_reader_app_for_android_phone.pdf
    • https://uploads.strikinglycdn.com/files/11397e4e-164c-42b8-899c-a6fccb583cac/76519745812.pdf
    • https://uploads.strikinglycdn.com/files/cd7c8c54-d843-443a-b009-21e04ea8e448/47967024192.pdf
    • http://xepatodop.onlinewebshop.net/price_list_for_first_edition_pokemon_cards.pdf
    • https://uploads.strikinglycdn.com/files/1ef68c1a-8625-4988-9341-ee1fded0e705/prepositions_of_place_exercises_for_grade_7.pdf
    • https://s3.amazonaws.com/jokotaziweluge/25538351122.pdf
    • https://s3.amazonaws.com/widuxade/38943454506.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_off00011469.bin
9d2fe24838082fa2edcc89b7f2af9b3d31ac4b0305ce9f7409824921fa5b5a8a
pdf-font-stream PDF embedded font (sfnt) at offset 0x11469 5280 bytes
font_01_sfnt_off0001263b.bin
2f4fee8f3aa15b83229dae5ff6ba63fc97adef039e63391843b4cc6f27b23693
pdf-font-stream PDF embedded font (sfnt) at offset 0x1263B 11780 bytes