Malicious PDF — malware analysis report

Static analysis result for SHA-256 e67eb0934273c049…

MALICIOUS

PDF

69.9 KB Created: 2020-11-13 18:38:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: e0e8e790128cb651c43fbece43471340 SHA-1: 3748c3e7622fb65a18a1f1b898b4418911e92289 SHA-256: e67eb0934273c049385e41297f466bf94a2743ef2eb81b77d8149382680f4f99
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, specifically indicating phishing and trojan behavior. It contains an embedded URI pointing to 'trafftec.ru', which is likely the intended destination for a phishing attempt. No scripts were extracted, but the presence of the malicious URI strongly suggests a social engineering attack.

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://trafftec.ru/aws?utm_term=bwca+maps+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4451930/normal_5fa706433b0db.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386830/normal_5f938e008e57e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/df5d1e8b-ef2e-450a-8fa9-5c33b20e1eeb/bafowo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3f09e156-2d75-427a-86bf-bef45990188c/19471702425.pdfIn PDF document text
    • https://s3.amazonaws.com/befarekogol/best_rpg_maker_games_on_android.pdfIn PDF document text
    • https://s3.amazonaws.com/ratixifo/langrisser_tier_list_reddit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ea491ede-5a48-4053-b68a-d1ab63e42b52/college_algebra_7th_edition_james_stewart_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c10f2f94-ed23-40f7-b5c4-c16269bc66ac/xijesurodabule.pdfIn PDF document text
    • https://s3.amazonaws.com/fukezavazuj/57526326970.pdfIn PDF document text
    • https://s3.amazonaws.com/jepinebawo/marvel_s_avengers_infinity_war_prelude_2018_2.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c3db3859-652f-4d33-83e0-0166a4d746cd/nusisorapukujo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3672dfb1-6fee-44bb-a546-a89799910b44/34051622547.pdfIn PDF document text
    • https://s3.amazonaws.com/vovopafubipu/691700097.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/iot_building_arduino-_based_projects.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3830c1dc-a4c6-4abf-93cd-5671e29a1708/five_dysfunctions_of_a_team_assessme.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c9f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9F7 4640 bytes
SHA-256: 9dbc6af28064de9116eaea543bae29fed019ba2f67e10dc504850edb6df6f3ed
font_01_sfnt_off0000d9c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9C2 10380 bytes
SHA-256: acc705a914235048a83b730016e65964e8ea245fd02e34c7f9135e9af1e326a1
font_02_sfnt_off0000fcff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCFF 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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