Malicious PDF — malware analysis report

Static analysis result for SHA-256 325708f175634a09…

MALICIOUS

PDF

85.5 KB Created: 2021-01-10 00:19:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 4739d19da53737c662242a38303f384f SHA-1: 96dfdcaef44c4bfe54a372054c6db5f4a5611cce SHA-256: 325708f175634a090d675052afdb250228a596f36d76d99cc669bd2d7ca3d815
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The document contains a large number of external links, suggesting it is part of a link farm or phishing campaign designed to redirect users to malicious websites. The presence of embedded URLs and the overall structure point towards a phishing or redirection attack.

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://traffnew.ru/aws?utm_term=asa+kasa+devacha+dev+langda+video PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4388819/normal_5f9c4e8695a0a.pdfIn PDF document text
    • https://mitenipup.weebly.com/uploads/1/3/4/3/134363071/40f445a5eaebfd.pdfIn PDF document text
    • https://cdn.sqhk.co/monasomeb/hcgfehh/3d_printed_ping_pong_table.pdfIn PDF document text
    • https://mawosamaretezij.weebly.com/uploads/1/3/4/8/134860838/9613c60a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376103/normal_5f8e3de64964e.pdfIn PDF document text
    • https://cdn.sqhk.co/wixefawoz/geXuj5P/pekefupixa.pdfIn PDF document text
    • https://rilokudewagozem.weebly.com/uploads/1/3/4/5/134597993/puxogunapiwaket.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489853/normal_5fb83042130ac.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369164/normal_5faf697b02694.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407318/normal_5fc10231d657e.pdfIn PDF document text
    • https://dutajidadu.weebly.com/uploads/1/3/4/7/134730474/1044118.pdfIn PDF document text
    • https://cdn.sqhk.co/gaxokakijefe/if1iihe/36701860486.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
    • http://fedorahosted.org/lohitIn PDF document text
    • https://s3.amazonaws.com/sukedil/20.1_viruses_worksheet_answers.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.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c7d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7D8 4928 bytes
SHA-256: c42d311635c8547a1d6bd1e5d5203ac1ea5f6fba5b4082f16a110cf175e5ab1a
font_01_sfnt_off0000d883.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD883 3772 bytes
SHA-256: 0a4742a7d30518e93b516112d6a49ac15dea1c2fdd3760b08880524b17fca9ea
font_02_sfnt_off0000e429.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE429 10476 bytes
SHA-256: 7f08bc28f51cc86acc5b0befa77a599669c23f6216204fe860f2ae0f441c01d5
font_03_sfnt_off0001081e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1081E 16132 bytes
SHA-256: 6820151f9a4816bccc9e85e605aef44ce22c8924dfcccd161584754f275bf028
font_04_sfnt_off00011d15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D15 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176
font_05_sfnt_off00012b14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B14 8852 bytes
SHA-256: 49caa60177044473d3b1233bdc141ea7b1f1ba2ebc123a167e038951d8381824

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