Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a4dff7865d333de…

MALICIOUS

PDF

68.9 KB Created: 2020-12-15 19:29:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 2efba38a3cb3c9b5d4e92d72363f2437 SHA-1: 58ccfc8f008e554d3e9294636e4b5c7acb062808 SHA-256: 3a4dff7865d333de0280688aa75f1a3005979bfdd30fc3c94f0efda7560706a4
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including ML and ClamAV, indicating malicious intent. It contains an embedded URL that redirects to a suspicious domain, likely intended to host phishing content or malware. The document body, though heavily obfuscated, suggests a lure related to modding issues in Skyrim, aiming to trick users into clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://trafficel.ru/123?utm_term=skyrim+manually+installed+mods+not+working PDF link annotation
    • https://wivupenoremew.weebly.com/uploads/1/3/0/7/130775018/nigakuwasimazemo.pdfIn PDF document text
    • https://ladetizor.weebly.com/uploads/1/3/4/7/134731735/navadixazomim_woliliton.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/ded081b2-741b-437a-995e-9d5130f6e018/ti-86_user_manual.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc066c960f2895dc1e54813/t/5fc1389b08845d0924b6f6a2/1606498459894/filexurofek.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/62d2e256-2823-4b3f-9c4b-34dd00a91782/mens_dream_paradise.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc655f22bbd7406582ba233/t/5fc91a35120169245b4054c0/1607014967230/duwugadisavekera.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc514356b97992eb576a7c1/t/5fcb0f281415195da07f13b9/1607143211256/cowboy_good_morning_picture_download.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbfd2c30b6b03258f2f7c3b/t/5fc41bb32dd96f59186ecdb8/1606687668160/22re_timing_chain_guide_torque_specs.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc360761c8c74131441d742/t/5fd0a013125f6a657a512858/1607507987631/bright_floral_doormat.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc573c9116eb00e3c6aa558/t/5fd016d5ef76c20f2d3b8b7b/1607472855024/best_albums_2020_billboard.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5db779955c744b55d5a92/t/5fd663427fc52c20692480f3/1607885635858/44096503070.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbfd308239b0722912b0841/t/5fc113a89ee0f32b877902cf/1606489000276/duwomaxetuvokinuk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9f04404f-93cb-4665-a594-1bc3b8619ae5/pamajuxajopunokarife.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc580f7084698658e7d73f3/t/5fc7b936c953717e09e389ac/1606924598664/planet_of_the_apes_1968_trailer.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fcf60a6cd9942793f27bfea/t/5fd71fb2034a586a4f5c6fe0/1607933875312/renotujenid.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_off0000cf3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF3A 5508 bytes
SHA-256: 3cd9ebdf82d8e51a353f681471125e362af951737396ba8be5522ab4f84a7d20
font_01_sfnt_off0000e1f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1F4 10656 bytes
SHA-256: 9611db4abba10ce85d013fa7a1c011dbefdec4224e11f97f06f114bf6ff633a1

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