Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8883650e225a56d…

MALICIOUS

PDF

81.4 KB Created: 2021-03-16 22:58:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 20c89d3c7115436ace4ae778f34a234d SHA-1: 2e70cd7699ef0269502415174a3885cc09bed883 SHA-256: e8883650e225a56dd5df26f6e3a5e3a52b9c1c9316a1f21f118864adb487782d
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with a critical heuristic identifying a link farm pointing to potentially malicious content. The primary URL, 'https://jumiwimov.ru/wix?keyword=ppsspp+gold+emulator+apk+download+latest+version', suggests a lure for software downloads, which is a common phishing tactic. ClamAV detection and ML classification further support its malicious nature, indicating it's likely a phishing or malware distribution document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://jumiwimov.ru/wix?keyword=ppsspp+gold+emulator+apk+download+latest+version PDF link annotation
    • https://zabojipenow.weebly.com/uploads/1/3/1/6/131636987/1204895f3885a2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469350/normal_6034446d5a5eb.pdfIn PDF document text
    • https://gulipuzajetag.weebly.com/uploads/1/3/5/3/135397689/tugasag.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418175/normal_5fd9208c3adac.pdfIn PDF document text
    • https://widonudafedezu.weebly.com/uploads/1/3/0/7/130776490/5066470.pdfIn PDF document text
    • https://degegoza.weebly.com/uploads/1/3/0/8/130873855/7695765.pdfIn PDF document text
    • http://vuvisopubalakur.iblogger.org/what_are_the_legal_rules_of_consideration.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408989/normal_5fd823cd80650.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420454/normal_60024406e517c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369782/normal_5fdde2dd40038.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nonavijewiw.epizy.com/51579473222.pdfIn PDF document text
    • http://juxitogepamuwo.epizy.com/foraging_theory_stephens_krebs.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a8d6687e-cea3-4de8-8ad0-09e3d45b96b0/how_much_does_an_operating_room_nurse_make_in_california.pdfIn PDF document text
    • https://s3.amazonaws.com/zeworibuzoza/renevoxixilisarepitajuxuf.pdfIn PDF document text
    • https://s3.amazonaws.com/wemazun/takunezimuduja.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxexi/american_music_awards_2018_performers_live_stream.pdfIn PDF document text
    • http://nojekakanafigi.rf.gd/15262726701.pdfIn PDF document text
    • https://s3.amazonaws.com/sedimeraxufi/vilifanerogifuximenabos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/08f9abf7-1492-45e1-b541-34caa04a485f/lalubanizowegep.pdfIn PDF document text
    • https://s3.amazonaws.com/bidivo/66936375604.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5c0a9111-4f9f-448d-a94a-0fa6e54b76e4/pimanumijanivojizo.pdfIn PDF document text
    • https://s3.amazonaws.com/goneduzum/android_studio_no_logcat_window.pdfIn PDF document text
    • https://s3.amazonaws.com/sajezife/a_s_t_c_full_form.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_off0000fd29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD29 5496 bytes
SHA-256: 170edbda6e098ed7a7c097edbce6e56b80a892abded307857616e0face93c962
font_01_sfnt_off00010fd4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FD4 12432 bytes
SHA-256: 7508e1f5649505e99acfd459b2586f273a35b4ff741a63bb9b41134e624fc666

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