Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1ad9fc3d7cd6737…

MALICIOUS

PDF

79.4 KB Created: 2021-03-20 04:04:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 8d0c00f5a3085a4d5f5b026735698a1b SHA-1: 09267dcf028573d9527e5acdc3138b5d8540b5e3 SHA-256: f1ad9fc3d7cd67371bf6b0a9aefdb23be55979c0266c5e36f62730c4fa068e24
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

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 0.9997

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 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.
  • 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=what+color+is+your+parachute+2018+pdf+download PDF link annotation
    • http://flowerport.shop/dojubedugejupiwidipuwoj2i9n.pdfIn PDF document text
    • http://tehnotop.store/assignment_of_benefits_form_blue_crosspbjxe.pdfIn PDF document text
    • https://cdn.sqhk.co/sutazojawote/vghV2hc/move_the_box_seoul_level_21.pdfIn PDF document text
    • http://getplafond.xyz/45525893273cewdt.pdfIn PDF document text
    • http://cheatyou.site/wigurituvixofirp304.pdfIn PDF document text
    • http://evromotors.net/international_marketing_strategy_analysis_development_and_implementationgoukz.pdfIn PDF document text
    • https://cdn.sqhk.co/rowavarop/TpGRxmM/lulepogexe.pdfIn PDF document text
    • http://wwwbcpzonasegura-viabcp.com/fun_ways_to_teach_antonyms0gjuk.pdfIn PDF document text
    • http://normaa-id.com/gisevuruzuletaxpgwa.pdfIn PDF document text
    • http://lajulufubugo.22web.org/c_define_template_class_in_cpp.pdfIn PDF document text
    • https://cdn.sqhk.co/kiximele/6hi65ha/sikolekizifowapidiv.pdfIn PDF document text
    • http://tugrull.com/research_methods_for_the_behavioral_sciences_6th_edition_freeufchc.pdfIn PDF document text
    • http://upgrade4me.com/89000206774cg25p.pdfIn PDF document text
    • http://zelofefeji.iblogger.org/21447560480.pdfIn PDF document text
    • https://cdn.sqhk.co/jinubodilev/gS8ggih/the_information_subscription.pdfIn PDF document text
    • https://cdn.sqhk.co/bebomopakax/aSCeKvr/pafukigixejej.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/07143a57-50c2-4e50-bd0c-0b6717547c5e/patoxuvomaximaroxunotov.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e4a33d28-36c9-45e2-803a-183efdf31e25/what_is_kolcabas_theory_of_comfort.pdfIn PDF document text
    • http://biledimetiwen.epizy.com/neboxejaneminemawex.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4b415d2a-6f64-4642-b213-ae71e573532d/what_is_bs_management_course.pdfIn PDF document text
    • http://nupedapubamamu.epizy.com/12672390157.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f3556d6a-a229-49e3-b5d1-319d6fff75d3/pavowalujeginapurego.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f22c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF22C 5968 bytes
SHA-256: 42ad0161c424f5b02ac323482ed8f70e7c37870e80e217fc7088d2bdb40df6f6
font_01_sfnt_off000106a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106A0 12592 bytes
SHA-256: 6e7062c10c7fe7d3a877de9419ef7af14f045d0bdef157a9cc47246e0d209c9a

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