Malicious PDF — malware analysis report

Static analysis result for SHA-256 71c401340b07f127…

MALICIOUS

PDF

71.4 KB Created: 2021-03-18 19:59:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 320d9ba7104d7e96e9d160d86ff54ebc SHA-1: 1990c054bfda0b8b13836c45cbef490e229558b8 SHA-256: 71c401340b07f1272f234359beb7d25c015a66c531427227af397054153258af
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://maypoin.ru/wix?keyword=mapleroyals+priest+leeching+guide PDF link annotation
    • https://sekamaxe.weebly.com/uploads/1/3/4/5/134590712/vevawe.pdfIn PDF document text
    • https://nonemofolovexuv.weebly.com/uploads/1/3/0/8/130874593/1171007.pdfIn PDF document text
    • https://taxufutusa.weebly.com/uploads/1/3/4/5/134514166/lazebili_zizazi_palovasabo.pdfIn PDF document text
    • https://cdn.sqhk.co/kivipemo/gciihgY/luzelak.pdfIn PDF document text
    • https://cdn.sqhk.co/kijowevo/Fnghohf/wijunafek.pdfIn PDF document text
    • https://cdn.sqhk.co/fipimomozuk/dibBidk/pixel_buds_app_for_iphone.pdfIn PDF document text
    • https://xilexuluta.weebly.com/uploads/1/3/6/0/136094269/lotunaloluramajijes.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/6e1d9c3f-7398-45e5-af19-e743b6fce059/graco_double_jogging_stroller_click_connect.pdfIn PDF document text
    • https://s3.amazonaws.com/ruzaganog/30051690085.pdfIn PDF document text
    • https://s3.amazonaws.com/xufoxorog/berojesifapid.pdfIn PDF document text
    • https://s3.amazonaws.com/bajapovogam/55243643896.pdfIn PDF document text
    • https://s3.amazonaws.com/vizegemawokaxe/plantronics_cs530_battery.pdfIn PDF document text
    • https://s3.amazonaws.com/vuterijoze/vidigisaveledigisulefo.pdfIn PDF document text
    • https://s3.amazonaws.com/wovitiku/muxozasufigubobup.pdfIn PDF document text
    • https://s3.amazonaws.com/zeworibuzoza/vanaruwobumusidoladoto.pdfIn PDF document text
    • https://s3.amazonaws.com/jaxesabi/aladdin_ost_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/debiwelof/68875972458.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f2afce23-2380-4eeb-8d8c-cd05f7c11fe9/wajikezeke.pdfIn PDF document text
    • https://s3.amazonaws.com/wajufifenoxuj/union_and_intersection_of_sets_worksheets.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cddd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDDD 5324 bytes
SHA-256: bdad46144bc51be3a931ac843d8ea09993958674a09cdd12178190db8f3db128
font_01_sfnt_off0000dff9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFF9 9980 bytes
SHA-256: 258af4d773ddfa049501cd74e3fca82730b898d5320987c454ae3c9ed5bf8005
font_02_sfnt_off00010245.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10245 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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