Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc234b6829eb0cd8…

MALICIOUS

PDF

86.5 KB Created: 2021-03-12 07:35:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 1613dcbb68ec8bf01534bdce5f472636 SHA-1: 94b6cdbed02fd7909956b910d66d1bc4555904b7 SHA-256: fc234b6829eb0cd81b064d372eec3410dd9f9aa11ad50351d09dc1ab450c9428
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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://resalured.ru/123?utm_term=angle+bisector+proofs+worksheet PDF link annotation
    • http://sipataj.sportsontheweb.net/543411474.pdfIn PDF document text
    • http://jakusavu.sportsontheweb.net/best_video_games_to_play_with_significant_other.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389570/normal_60249d2b87195.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460457/normal_603890f641028.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402745/normal_5fecad9933360.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454436/normal_602ed0a28c0aa.pdfIn PDF document text
    • http://vimobewawulipiz.mypressonline.com/milunejunutewapake.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://5fdaa9e0-ad6d-443b-8779-beb8e45026dc.filesusr.com/ugd/05301a_a8dd3289687b413bb80f1de55c799adf.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/minegikukovel/3676055426.pdfIn PDF document text
    • https://s3.amazonaws.com/sojaxub/divinity_original_sin_enhanced_edition_starter_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1ab4214b-92e8-4aab-ad8c-7e06c2f76778/who_is_the_most_famous_colombian.pdfIn PDF document text
    • https://s3.amazonaws.com/kewuxejikiwe/38871175558.pdfIn PDF document text
    • http://finedati.epizy.com/whatsapp_free_iphone_6s.pdfIn PDF document text
    • https://39c1d623-eccb-4af0-a86a-15328a2d61f9.filesusr.com/ugd/3cb6cb_5ccc96c791694e7db5199509b94fe402.pdf?index=trueIn PDF document text
    • https://a19d597f-2220-41b3-9459-688249e8a20b.filesusr.com/ugd/f19f53_3619a12acaf048a089ae80d88100f702.pdf?index=trueIn PDF document text
    • https://ce322291-b3da-4cc2-ae0f-523e25daec44.filesusr.com/ugd/4530da_20bc6a16069c4c32bc4fd3f9194f1bea.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/d0ad6bee-60ac-4c2e-8746-071b45b75c80/hp_deskjet_6540_driver_download_windows_10.pdfIn PDF document text
    • http://ravumewikuw.rf.gd/zyxel_pk5000z_change_wifi_password.pdfIn PDF document text
    • https://s3.amazonaws.com/xapijifas/xevewawediwebodidumobira.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6bab1260-67b8-4f31-bb46-ce1fdb76b522/honeywell_th5110d1022_installation_manual.pdfIn PDF document text
    • http://lawapekesesokap.rf.gd/polaris_280_hose_connection.pdfIn PDF document text
    • https://s3.amazonaws.com/xefezesebusu/jokakakowimudoriri.pdfIn PDF document text
    • http://vudasuluwiviwaj.rf.gd/rancilio_silvia_review_coffeegeek.pdfIn PDF document text
    • https://f3dcd8e3-6656-4b47-a81e-a993d3c4f2a1.filesusr.com/ugd/aa9ef2_6b4b1c7be5d04211a112a92265bf4535.pdf?index=trueIn PDF document text
    • http://kesopepi.rf.gd/wavatawezekakupo.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ef98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF98 5140 bytes
SHA-256: 501c3792562d2662c948b326274b43673897052e9344c9c9de884e1505c03cab
font_01_sfnt_off00010113.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10113 11424 bytes
SHA-256: 7c14c2e2d824352b8d64e9feeefd53b0869165984447319a29a6fa8abcd9989a
font_02_sfnt_off00012831.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12831 16116 bytes
SHA-256: 3c5e3a177d002e2d9b3a79f7d34109f6c72c14ab81edfb1677c55b4ad04fa67e
font_03_sfnt_off00013d17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13D17 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c