Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e7007722414c286…

MALICIOUS

PDF

88.8 KB Created: 2021-03-14 03:29:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 95729e01f4d40a20e9e5604d4f766e63 SHA-1: 8046a5a4bf232b7d4cbf6f3493d5f84e6dabbe9e SHA-256: 5e7007722414c286a6d9eafc8154e2773682000c0c5c47ef30fbaba062dd9eac
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 0.9991

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://botokaw.ru/123?utm_term=android+one+x3+miracast PDF link annotation
    • http://ropejolun.iblogger.org/what_is_biological_psychology.pdfIn PDF document text
    • https://cdn.sqhk.co/wutijiwatar/ghbjehj/69223696305.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482860/normal_6047251231e9b.pdfIn PDF document text
    • https://cdn.sqhk.co/jatizaru/jiNxbAI/penamilofixefofevumuj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465908/normal_60184896a5517.pdfIn PDF document text
    • https://cdn.sqhk.co/gobajejuz/S9ijtgg/class_10_english_solutions_first_flight_chapter_4.pdfIn PDF document text
    • https://cdn.sqhk.co/famazipow/sjb44RL/7220633205.pdfIn PDF document text
    • https://cdn.sqhk.co/terasovo/hhjg1ha/zunixidoronopifi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386084/normal_5fda8155535f4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465707/normal_5fdf24a2b4241.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://39ad70c8-6a03-4de2-a89b-b0209cba5754.filesusr.com/ugd/d2759c_2c2af762be6642698e2a1f308bab7cd3.pdf?index=trueIn PDF document text
    • https://abaaaae4-9231-44fc-b12c-ad55ebcc68e7.filesusr.com/ugd/2ca09c_01d4fac2a25a4a2b9a9bd4390ae0e4ad.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/mexavofezoxi/ap_statistics_test_3d_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/wivunonovef/jurudoladowijabari.pdfIn PDF document text
    • https://s3.amazonaws.com/nafamaragisek/ashley_williams_mass_effect_1_romance_guide.pdfIn PDF document text
    • http://lidikulogape.rf.gd/limikevupawelibezavefe.pdfIn PDF document text
    • https://s3.amazonaws.com/remufuzu/bd_facslyric_user_guide.pdfIn PDF document text
    • https://a179b4bb-f9e1-4b0b-8685-f881d2afde68.filesusr.com/ugd/0fdb6d_a06551c459184974997c043733b11f57.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/woxotopapozokev/chameleon_run_apk_full.pdfIn PDF document text
    • https://da9d63b4-fbfd-4f6f-88e7-06ac0d76355b.filesusr.com/ugd/ca300b_c428278e50eb433c967afc1aff68dfc9.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wajufifenoxuj/sulimesaxafax.pdfIn PDF document text
    • https://s3.amazonaws.com/bupaxomu/67885434170.pdfIn PDF document text
    • https://s3.amazonaws.com/jaloto/7627491373.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f07c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF07C 5276 bytes
SHA-256: b2bac07590fc581a91c3ce3722733d1554211d99f8ecf1a8c153979e04498eaf
font_01_sfnt_off00010255.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10255 29488 bytes
SHA-256: 4e206f04b4b42a681c4987ab12be2cdd8e461d544ce6632b95af8b2cb22f5c87
font_02_sfnt_off00013e14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13E14 16268 bytes
SHA-256: 894033a6c5c573729c4a4d43d0785888ae0e4f06a8fff8226daee3ba1642ab58

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