Malicious PDF — malware analysis report

Static analysis result for SHA-256 2eed469185d5f37f…

MALICIOUS

PDF

73.1 KB Created: 2020-12-26 22:49:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: b10cba0d6634d58a6616d5e9e34c8b67 SHA-1: 61d44bfc948a6beb1e61e1d1dbc258698a681d20 SHA-256: 2eed469185d5f37f798f74badc38c301b04cbf158a7458baf2bc69014b0a1613
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a heuristic firing for a large number of external links, many of which are likely intended for SEO manipulation or to host malicious content. One of the extracted URLs, 'https://traffnew.ru/aws?utm_term=backtrack+5+64+bit+iso', is directly associated with a heuristic indicating an external URI. The presence of a 'download button' lure and the ClamAV detection further support a malicious intent, likely phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://traffnew.ru/aws?utm_term=backtrack+5+64+bit+iso PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4379489/normal_5fc41238eb930.pdfIn PDF document text
    • https://cdn.sqhk.co/jetobatu/StzaylE/brothers_in_arms_3_hack_apk_2019.pdfIn PDF document text
    • https://xopaluwejur.weebly.com/uploads/1/3/1/8/131857284/6e709fdda73c.pdfIn PDF document text
    • https://cdn.sqhk.co/jekuzedu/bhhuYjb/3d_bass_guitar_tattoos.pdfIn PDF document text
    • https://fapifejoj.weebly.com/uploads/1/3/4/2/134265577/rukoxuj_salezavak_natebumane.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469143/normal_5fc5bd3f81d36.pdfIn PDF document text
    • https://cdn.sqhk.co/xixumobun/fqhbAqm/zombie_castaways_cheats_2018.pdfIn PDF document text
    • https://cdn.sqhk.co/dabeluza/ikep7jj/16523325268.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://uploads.strikinglycdn.com/files/1ab0b4ca-9e02-4ace-8886-f3db3e3ee806/xorekalele.pdfIn PDF document text
    • https://s3.amazonaws.com/leteraxewe/date_function_in_google_sheets.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fbdff35d-c95e-4cfc-8f15-4aace7324231/nijadijugubumemowosog.pdfIn PDF document text
    • https://s3.amazonaws.com/sugaguxagu/fasejuwadebozifozotejew.pdfIn PDF document text
    • https://s3.amazonaws.com/fajeloninesitel/ethnography_sociology.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/61cc25c5-ec7c-4131-8cef-f011b09f5c82/sewufakijitufazu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/06b935db-3e8e-45f4-aa7e-bcd6e93ebcda/guia_para_secundaria_2018.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f0859e9c-681a-4aea-8012-81c0cac85b08/1935088115.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d2b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2B0 4944 bytes
SHA-256: 557bd736c04dd292a3d707c49136eafec7191c7024523a8d913bde2d921c7e9b
font_01_sfnt_off0000e395.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE395 11156 bytes
SHA-256: 0b87accac77050b686f971278d478c6503375b65e4f2115713c990f2c1d71cd3
font_02_sfnt_off00010996.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10996 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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