Malicious PDF — malware analysis report

Static analysis result for SHA-256 d76ae74e6a495234…

MALICIOUS

PDF

66.1 KB Created: 2020-12-23 14:43:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 446f001b9937d9e1d55d9298719aa863 SHA-1: 76c69b0abc741988484f803be344d0017b75b84a SHA-256: d76ae74e6a4952340727b360e78e93672c1fd91756988a9d83d7f63d629534e5
154 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://traffmen.ru/aws?utm_term=video+animasi+lucu+status+wa'. This indicates the document's primary purpose is to lure the user to a potentially harmful external site. The ML classifier also strongly flagged this PDF as malicious. While no scripts were extracted, the presence of a malicious URL suggests a phishing or malware delivery attempt.

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
  • 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://traffmen.ru/aws?utm_term=video+animasi+lucu+status+wa In PDF document text
    • https://raboxodibol.weebly.com/uploads/1/3/4/0/134096122/dujamof-fijiwinojuji-zetewegavimuxa-lubip.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392649/normal_5fb4f27887fa9.pdfIn PDF document text
    • https://kuvofexe.weebly.com/uploads/1/3/1/1/131163751/seguvafimulez_gewikixar_bomusibi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368767/normal_5f8b2c5b638ed.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466379/normal_5fdc226053c4f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409614/normal_5fd2e9edafa23.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460966/normal_5fc9f67e48dc4.pdfIn PDF document text
    • https://kefelewupu.weebly.com/uploads/1/3/4/7/134711224/32fedd2ab6ba795.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408582/normal_5f9cc133ea879.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/6e14d214-da3a-4d09-a589-2b7961b0268c/13336463342.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b82bb03b-3fd8-4b1c-99fb-bc4179bcb504/best_buy_all_in_one_touch_screen_computers.pdfIn PDF document text
    • https://s3.amazonaws.com/fenatagazise/93189922210.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d309862e-7351-4001-82f1-c89795b216de/megajejifomefuragir.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/619538c2-6223-4862-8d7e-e56b7ee35473/6186174276.pdfIn PDF document text
    • https://s3.amazonaws.com/vavebufevodutob/chingam_chabake_audio_song.pdfIn PDF document text
    • https://s3.amazonaws.com/jewizopukuni/datavuwujewijebet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b5efdc6c-6c45-4150-86cf-02d379e20836/nations_valuation_services_address.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_off0000c96f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC96F 5044 bytes
SHA-256: d2990392ee4c8aa6923fa427c846671f60044e80585edf158b4c564cfe82e6f2
font_01_sfnt_off0000da9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA9C 9752 bytes
SHA-256: 7cab726f04001759e5d879ab79ae6bde5c66f37a331d38384670d7adb8850fa2

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