Malicious PDF — malware analysis report

Static analysis result for SHA-256 978d62b7bbb4bf65…

MALICIOUS

PDF

84.1 KB Created: 2021-03-29 16:45:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: c3bce330eca6e25e7e2b14c87ee5e53c SHA-1: 9a8ff617ffbc2efc1543e3c88536eb8e4e8ea28d SHA-256: 978d62b7bbb4bf65eecd9f3ffa1689ea5e4ebb8b02a9ba47a804833f266cf5ed
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 0.9993

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://lozipotod.ru/wix?keyword=area+of+a+triangle+using+trig+word+problems PDF link annotation
    • https://jajadonafusava.weebly.com/uploads/1/3/4/0/134040597/gelozelenamuji.pdfIn PDF document text
    • http://mebel-albero.ru/pofimebuxisuvnpun.pdfIn PDF document text
    • http://indital.fun/48787759639v1vdj.pdfIn PDF document text
    • http://carinsusa.info/lawimarotifilimtnw.pdfIn PDF document text
    • https://jimiwijir.weebly.com/uploads/1/3/4/5/134525211/pejiwi-tivod-dibogemowo-gujene.pdfIn PDF document text
    • http://sayfelengs.space/ipega_pg-9023_pubg_mobile_iosytr28.pdfIn PDF document text
    • http://samelike.site/gujonawawale6x7mg.pdfIn PDF document text
    • http://glawerry.online/development_through_the_lifespanglh8k.pdfIn PDF document text
    • http://car-test.pro/tixodifidojajakopevojak2197.pdfIn PDF document text
    • http://ver-alex.website/attack_on_titan_116p72ca.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://s3.amazonaws.com/zobuwubedak/types_of_cctv_camera_cables.pdfIn PDF document text
    • https://0404cab7-c021-4537-be79-420bcb2f88cc.filesusr.com/ugd/52c240_8a2b9b0da9744eb7863112d8edf96978.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/gidibesuxi/ansys_customer_portal.pdfIn PDF document text
    • https://s3.amazonaws.com/jazofi/84367924587.pdfIn PDF document text
    • https://3eeb541e-75be-486c-a732-b1e279b2a932.filesusr.com/ugd/eaab1c_9a307c865d0b4006960b37828d9da1f3.pdf?index=trueIn PDF document text
    • https://183df7f2-4185-4ca0-bfcc-33b39bc842f1.filesusr.com/ugd/9ac34a_413c2dd2e4e24ff69b5f4f0024bd2cbe.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/viregujipowuru/wilez.pdfIn PDF document text
    • https://s3.amazonaws.com/bugutaj/pofadugimefafutiw.pdfIn PDF document text
    • https://f8d4b294-f952-4a11-85e8-0a3036f9bdaf.filesusr.com/ugd/ad8f3a_dbe9a2d63dc44b4eb8df6faa34225194.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/8c40db7a-f30e-4176-9e57-7fbe95a7ea7e/how_to_change_sharp_atomic_clock_from_military_time.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bd54c234-bf81-43df-af1c-90bcb164a973/1999_polaris_xplorer_400_4x4_value.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e634.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE634 5464 bytes
SHA-256: a1b94b05a68001f291326925176d1035764908be47de56008b60890ade45e73b
font_01_sfnt_off0000f8bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8BC 11312 bytes
SHA-256: 18a1387c11258632ab94c9eddac52110f656ce77baf8aa019cf920515e3ecef6
font_02_sfnt_off00011f9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F9A 16072 bytes
SHA-256: 24c5c481937acf4f4841e6563a6d7a18cfdb810806c94b09ac0ff4033348c1e6
font_03_sfnt_off00013439.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13439 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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