Malicious PDF — malware analysis report

Static analysis result for SHA-256 ffd7b55b5e20eb58…

MALICIOUS

PDF

99.6 KB Created: 2021-03-26 08:34:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ffefa8275dbcff0d6f725d9b5e2aa8ae SHA-1: 6ea95e7ffd428110820c671adb4ed2407f2db52e SHA-256: ffd7b55b5e20eb58d9bb5f08eac41938b8cbf7b7b424268317abe244e930b428
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, likely a phishing lure. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it is designed to redirect users to malicious websites, potentially for credential harvesting or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://resalured.ru/123?utm_term=heritage+asset+management+guidelines
    • http://helplnstagram-confirm.com/hp_designjet_5000_pricel34v2.pdf
    • http://mscredit.info/72859088706pqs4v.pdf
    • https://xikudamoxi.weebly.com/uploads/1/3/4/5/134576601/1390477.pdf
    • http://help-lnstagramcopyrights-verify.com/mupobebexanafidusesunxrnve.pdf
    • https://cdn-cms.f-static.net/uploads/4498986/normal_605d675eb3e86.pdf
    • http://evromotors.net/kuwumulilowigp4jpf.pdf
    • http://jakartapro.xyz/job_mania_eternal_dungeon_apkoub4e.pdf
    • https://cdn-cms.f-static.net/uploads/4384323/normal_604690857a8ca.pdf
    • http://ayazshabutdinov.club/242927796291jz5.pdf
    • http://titanovyi-filtr.ru/what_are_the_rules_for_positive_and_negative_numberszxqcd.pdf
    • https://kezunegewekal.weebly.com/uploads/1/3/1/4/131483031/lolewotuxosu-fumufezisik-fawadirabuz-nagolubozal.pdf
    • http://shopee24.site/memopumunamerumezobutseryy.pdf
    • https://malugula.weebly.com/uploads/1/3/2/6/132695531/8408028.pdf
    • https://gijagexerifaru.weebly.com/uploads/1/3/5/3/135322880/nukozajixati.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/b6d7c96f-e904-45bc-b6c8-873abd703c01/how_much_does_it_cost_to_start_a_podcast_on_itunes.pdf
    • https://uploads.strikinglycdn.com/files/04a5cf94-5d46-48bf-9e4f-248107bc3945/kumilap.pdf
    • https://s3.amazonaws.com/fukepez/felitsa_yanni_piano_sheet_music.pdf
    • https://s3.amazonaws.com/bejokazemur/contemplate_life_sentence.pdf
    • https://s3.amazonaws.com/silubebebefuju/ff8_card_club_guide.pdf
    • https://uploads.strikinglycdn.com/files/4f61a306-09d0-43c6-ade5-14feeec006f1/28788032482.pdf
    • https://uploads.strikinglycdn.com/files/c14df0cf-555c-49f0-8bf1-e384c2332682/vivovasewovan.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_off00014764.bin
76bf15f17379047ec147222522a4fa33dbcfd880504c249edee445e96422c2c9
pdf-font-stream PDF embedded font (sfnt) at offset 0x14764 5104 bytes
font_01_sfnt_off000158a1.bin
e9dc723da43653649e8914db004bfb5ae3068c4865c4a9d6fa682e9556012972
pdf-font-stream PDF embedded font (sfnt) at offset 0x158A1 11948 bytes