Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4ee126ac62e340d…

MALICIOUS

PDF

72.6 KB Created: 2021-03-12 18:43:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a60fef47f114c95d9393a75d7eb08cc2 SHA-1: 54e7fe27e08b5729821d6b08c67130ddb60a6eba SHA-256: d4ee126ac62e340d03607a92d2f43eedc7929d80d0505e91d7aced7fcfb2bc7a
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, indicating a phishing or trojan payload. It contains an embedded URL that directs users to a suspicious domain, likely to host a malicious payload or phish for credentials. No scripts were extracted, but the presence of embedded URLs and the overall detection suggest a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://kuzutuzo.ru/aws?utm_term=how+to+adjust+carb+on+craftsman+weed+eater
    • http://wixosefimaba.scienceontheweb.net/guide_to_understanding_personal_finance.pdf
    • http://kekewawoxugar.sportsontheweb.net/binomial_pairs_list.pdf
    • https://cdn-cms.f-static.net/uploads/4450139/normal_6019ad7660c83.pdf
    • https://static.s123-cdn-static.com/uploads/4459481/normal_5ff6a550ac11e.pdf
    • https://cdn-cms.f-static.net/uploads/4426558/normal_604b396fdb379.pdf
    • https://static.s123-cdn-static.com/uploads/4419832/normal_5fee63cc5c77b.pdf
    • http://verification-help.com/peter_pan_and_wendy_book_review0onjh.pdf
    • https://cdn-cms.f-static.net/uploads/4450259/normal_6040b5579c978.pdf
    • http://memisada.mygamesonline.org/681849419.pdf
    • https://cdn-cms.f-static.net/uploads/4445101/normal_6011ad398fd12.pdf
    • http://profaudit32.ru/58500831472iakye.pdf
    • http://wildber.store/linfoma_de_burkitt_y_vihnx5it.pdf
    • https://cdn.sqhk.co/notenirikev/ejiheS3/soccer_kingston_ny.pdf
    • http://vorgazme.com/how_to_turn_on_coleman_saluspakok8s.pdf
    • https://static.s123-cdn-static.com/uploads/4493876/normal_5fe2bf8c584d7.pdf
    • https://cdn.sqhk.co/nuvurero/ahbjhVg/24261372901.pdf
    • https://cdn-cms.f-static.net/uploads/4447252/normal_6021ec76052be.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/a75714a0-c293-48a6-9d75-2946a85fc05c/bowflex_xtreme_2_for_sale_used.pdf
    • https://uploads.strikinglycdn.com/files/57bd223a-ad32-471d-b49d-ec6535bc5b25/xukilobupapitezun.pdf
    • https://uploads.strikinglycdn.com/files/bf59628a-100b-4a48-bb0a-837dbb611d13/vutegomijo.pdf
    • https://uploads.strikinglycdn.com/files/abab58b7-3104-46fd-8b89-78c043e6766c/wahl_clipper_trimmer_combo_cordless.pdf
    • http://zugepoguj.onlinewebshop.net/gugajimejujonaluzotekegor.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_off0000dbf8.bin
7436d95edc6e64c5a6a10688a1981b2e453289899af12b793dbd32929aab6573
pdf-font-stream PDF embedded font (sfnt) at offset 0xDBF8 5404 bytes
font_01_sfnt_off0000ee58.bin
fdc5fae3989be525e56d08aa1365f9757bf1c1eea3acba415a4c7027a588aa10
pdf-font-stream PDF embedded font (sfnt) at offset 0xEE58 10668 bytes