Malicious PDF — malware analysis report

Static analysis result for SHA-256 69d2cde6bedbfbe6…

MALICIOUS

PDF

90.2 KB Created: 2021-02-14 07:52:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: bf0e697d8890e861c3b451eeaec2a776 SHA-1: b26403bfea1390ee61d9a782fde1ca0202dee7b4 SHA-256: 69d2cde6bedbfbe6f0c1b24d7ece6d149b1edf7695c68b623075c02697a9bf62
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which are SEO-related, suggesting a link farm or spamming operation. The primary external URI points to a URL that appears to be a search result for a specific keyword, indicating a lure to a potentially malicious website. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly suggest malicious intent, likely for SEO spam or to distribute further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://leonvi.ru/wix?keyword=hetalia+birthdays+in+july PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4410459/normal_5fd81d60d6157.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495400/normal_5fcaf2014e8bd.pdfIn PDF document text
    • https://cdn.sqhk.co/tuvuderasaza/k56ibgd/road_rash_3d_ps1_iso.pdfIn PDF document text
    • https://cdn.sqhk.co/dasisogi/eLMihgi/78021558060.pdfIn PDF document text
    • https://cdn.sqhk.co/pixefavenar/eXBtSWz/39657909990.pdfIn PDF document text
    • https://zukuvexoxowi.weebly.com/uploads/1/3/4/5/134597017/bekekedira.pdfIn PDF document text
    • https://cdn.sqhk.co/vavewiren/RhpS5ic/31161892915.pdfIn PDF document text
    • https://cdn.sqhk.co/somepizeko/gijchig/kewexuwotarexekijabetuz.pdfIn PDF document text
    • https://cdn.sqhk.co/kixagixupo/0jjnNmh/tozamaxarusuwenepoxudenaf.pdfIn PDF document text
    • https://cdn.sqhk.co/wixexozesila/GIhjjbz/91676757946.pdfIn PDF document text
    • https://wafilanukeg.weebly.com/uploads/1/3/5/3/135309269/c3dd9678d1a50f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459029/normal_60283aeae3861.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://s3.amazonaws.com/sefabe/82461004889.pdfIn PDF document text
    • https://s3.amazonaws.com/risalenefazozo/sports_tv_1._0_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/mafavuzenoliki/big_hero_6_full_movie_tamilrockers.pdfIn PDF document text
    • https://s3.amazonaws.com/pazovugal/xadajivokekagiri.pdfIn PDF document text
    • https://s3.amazonaws.com/juvuraguvutoxif/official_paris_metro_map.pdfIn PDF document text
    • https://s3.amazonaws.com/lawakux/manovorupev.pdfIn PDF document text
    • https://s3.amazonaws.com/ruzaganog/kogobipipor.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eaaa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAAA 3368 bytes
SHA-256: ab60ccbcacff5c821e01643fd0a07dbc631471a9b1b78bc3271d76a1852d5db3
font_01_sfnt_off0000f65d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF65D 5192 bytes
SHA-256: dbfbbaab7ae741a9b21ce1c514d60077016b802d53767a0afe2b546dbef9a994
font_02_sfnt_off000107fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107FA 2316 bytes
SHA-256: 5b91c186c0d2506cbb1932d417fe2e40edf424c68f696d43443a27f8f7fee313
font_03_sfnt_off000111e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x111E8 16044 bytes
SHA-256: acaba081bbe18a6d99c3a086edcc1eba2e28c0b3fd003c0d7f62e89483c4ce0f
font_04_sfnt_off00014399.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14399 16560 bytes
SHA-256: 63dda55f034e9f589f8482aec0178ee73b4c55a098548822c8b02443ed92690a

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