Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c895b0a91d76937…

MALICIOUS

PDF

82.9 KB Created: 2021-01-15 13:52:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 3ec3cf31c7489c851d76fadbb379787f SHA-1: 464903472265e3da2539c21215da0a6c90008a0a SHA-256: 0c895b0a91d76937f224de4572677e42965844da73341e5cfff38277e7e25407
184 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by multiple heuristics, including a critical alert for linking to known malicious redirector infrastructure. The embedded links, such as 'https://traffking.ru/aws?utm_term=hotel+del+luna+ost+piano+sheet+music', are likely used to direct users to phishing sites or download further malware. The document's structure and numerous links on disposable hosting suggest a link farm designed to obscure the ultimate malicious destination.

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
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://traffking.ru/aws?utm_term=hotel+del+luna+ost+piano+sheet+music In PDF document text
    • https://site-1177759.mozfiles.com/files/1177759/have_got_has_got_worksheets_islcollective.pdfIn PDF document text
    • https://filinisosiwox.weebly.com/uploads/1/3/0/8/130814007/6940070.pdfIn PDF document text
    • https://site-1235418.mozfiles.com/files/1235418/kuwemanowegusomifuvofaka.pdfIn PDF document text
    • https://site-1254699.mozfiles.com/files/1254699/venaludavixarubu.pdfIn PDF document text
    • https://buximinolid.weebly.com/uploads/1/3/1/3/131381316/18e0ed4bb75e5.pdfIn PDF document text
    • https://site-1168144.mozfiles.com/files/1168144/real_car_driving_experience_racing_game.pdfIn PDF document text
    • https://site-1177340.mozfiles.com/files/1177340/groupon_merchant_center_italia.pdfIn PDF document text
    • https://site-1166601.mozfiles.com/files/1166601/jovezax.pdfIn PDF document text
    • https://site-1178703.mozfiles.com/files/1178703/bee_backpack_leather.pdfIn PDF document text
    • https://site-1176516.mozfiles.com/files/1176516/85677578090.pdfIn PDF document text
    • https://site-1177111.mozfiles.com/files/1177111/13531531071.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • https://s3.amazonaws.com/donarepemi/pdf_mi_primera_comunion_catecismo_del_nio.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://www.gnu.org/licenses/gpl.htmlIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000caee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCAEE 5692 bytes
SHA-256: 69922b8aa86f5fddbac4a60ad4843ffe184a5b0685adb4590922c5f544b4338f
font_01_sfnt_off0000dec1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEC1 5180 bytes
SHA-256: 5df284d76634b0cde26afe21045412e1c31f9943396bf11b312a560b9225f197
font_02_sfnt_off0000f02b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF02B 5672 bytes
SHA-256: 4e47a1cfec9eae10c5ef3f9d0a936055406f02ce602d7b15d9f7102e4da8f58d
font_03_sfnt_off0000fe38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE38 11608 bytes
SHA-256: baba25a3287e4cc6a692d54ad674e75e7ee739dbcbac20c0444a9df43995c23c
font_04_sfnt_off0001265b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1265B 16080 bytes
SHA-256: c3f4daf87bd991286a272c81413967efc8b45f11c319848930383fb2b5ff3459

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