Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc0a84e3bc4949c4…

MALICIOUS

PDF

39.1 KB Created: 2020-10-28 21:03:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 4ca433829f34ecee7ac0abc2295c0e35 SHA-1: 299722011467d855a71081496a2962fad4d8bae8 SHA-256: dc0a84e3bc4949c41e6a28ba5f266115f1af2119653819d15e5fdef3d49d3960
94 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://gettraff.ru/aws?keyword=dragon+ball+shenron+plush'. The ML classifier also strongly flagged this PDF as malicious. While no scripts were extracted, the presence of the malicious URL within the document body strongly suggests an attempt to lure the user to a harmful site, likely as part of a phishing or malware delivery scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://gettraff.ru/aws?keyword=dragon+ball+shenron+plush In PDF document text
    • https://gejatovuri.weebly.com/uploads/1/3/1/4/131406669/nanorotulexinino.pdfIn PDF document text
    • https://turomanusogagi.weebly.com/uploads/1/3/1/4/131453559/6764829.pdfIn PDF document text
    • https://duxixujojive.weebly.com/uploads/1/3/0/7/130739103/sejiliduzika-danuwefitap-sotuvakuxo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381788/normal_5f94a7a030bd6.pdfIn PDF document text
    • https://mujetuzavos.weebly.com/uploads/1/3/4/2/134266282/62b7256e9.pdfIn PDF document text
    • https://fiwatinizajof.weebly.com/uploads/1/3/0/8/130874156/kuxiterodobeg-bebamowudi-goxaxibef-kimekix.pdfIn PDF document text
    • https://lekolusogi.weebly.com/uploads/1/3/4/3/134365603/fofelu-japofipemudemat-takepigezasi-tutegidas.pdfIn PDF document text
    • https://raxaregos.weebly.com/uploads/1/3/4/3/134363135/lokukusinomibi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378165/normal_5f8ce17df3242.pdfIn PDF document text
    • https://luwobidope.weebly.com/uploads/1/3/0/8/130814225/revaxawefanasixisoz.pdfIn PDF document text
    • https://xosotemup.weebly.com/uploads/1/3/4/3/134367608/jepiweludoseg.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370267/normal_5f8825fc49ce5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/determination_of_acidity_of_water_sample.pdfIn PDF document text
    • https://s3.amazonaws.com/guxosa/english_literature_reader_class_10_cbse.pdfIn PDF document text
    • https://s3.amazonaws.com/pazerogasarinu/bijenamovoniduposolij.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/kibenavojigiwajimi.pdfIn PDF document text
    • https://s3.amazonaws.com/zesotat/59530033842.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/db034d0e-f20f-4c63-bd9d-1564b1887943/239657706.pdfIn PDF document text
    • https://s3.amazonaws.com/gotenukevepunin/describing_food_vocabulary.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/38acb0cd-4068-423e-ab0c-d7973d63df67/the_ultimate_gift_dvd.pdfIn PDF document text
    • https://s3.amazonaws.com/rorives/cal_poly_academic_calendar_2016-17.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/03cbabc5-9a32-443e-a629-2524a867011e/gepafape.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000058d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x58D2 5220 bytes
SHA-256: 23929f3b3fbba77feca8510a0b6e914775cdc05e26741f70b211fbee0af5d7a6
font_01_sfnt_off00006a90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A90 10816 bytes
SHA-256: e6c53d062e8c231e495e9dd3d656ca6722b52d2fa82855a8f23c7b937d9274d6

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