Malicious PDF — malware analysis report

Static analysis result for SHA-256 46cb1953fae7019e…

MALICIOUS

PDF

88.4 KB Created: 2021-05-21 20:25:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: c1bcce35d2f6aaeb75777da910a79855 SHA-1: 1332eee1b741521ab580a9de29a47faf87c42515 SHA-256: 46cb1953fae7019e630d1c69ff8a644b8dadb5a5b6df316f268ac2db083726f7
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 0.9997

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 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://vilenefex.ru/strik?utm_term=garbh+sanskar+book+listen+online PDF link annotation
    • https://putoxovomugov.weebly.com/uploads/1/3/0/7/130739063/4717721.pdfIn PDF document text
    • https://mitezexevas.weebly.com/uploads/1/3/4/5/134525922/841b12ebed8187f.pdfIn PDF document text
    • https://mosatidopo.weebly.com/uploads/1/3/4/7/134731439/vezelubobewe.pdfIn PDF document text
    • https://zosupexaduj.weebly.com/uploads/1/3/0/7/130738593/petapizikeluv_disajomux.pdfIn PDF document text
    • https://torevuke.weebly.com/uploads/1/3/4/3/134378254/f4731e.pdfIn PDF document text
    • https://wapaberupuz.weebly.com/uploads/1/3/5/3/135397773/vixavunakirazuw_xoguvujikedapom_jiduxemelinu_tobujijopidibep.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/b7c96105-ac37-4bb4-b0a2-72cb6e4cd45f/lg_top_loading_washing_machine_service_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/wudibirewuduto/lightroom_film_presets.pdfIn PDF document text
    • https://s3.amazonaws.com/gowebabuxogiro/lolulomojunavoroteme.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0bddbddf-1fd6-42bb-869c-12af1b72ba86/mirojokal.pdfIn PDF document text
    • https://s3.amazonaws.com/lanorolowu/28999778017.pdfIn PDF document text
    • https://s3.amazonaws.com/desekusoxi/do_glute_activation_exercises_build_muscle_reddit.pdfIn PDF document text
    • https://s3.amazonaws.com/topipovikapari/hp_pavilion_15cs3073cl.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxomigo/girezuginorosokiterakavep.pdfIn PDF document text
    • https://s3.amazonaws.com/pirofopafu/samsung_galaxy_j2_play_store_app.pdfIn PDF document text
    • https://s3.amazonaws.com/juwofuxufijup/why_do_songs_keep_disappearing_from_spotify.pdfIn PDF document text
    • https://s3.amazonaws.com/megujobemegor/diary_of_a_wimpy_kid_book_3_read_online.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5cdd23ed-bf71-4a2e-9172-740cfaae4c30/which_bassinet_is_the_best.pdfIn PDF document text
    • https://s3.amazonaws.com/wetevali/guide_morgana_mid_s8.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/98c163e5-6f59-4da1-ae28-f5a80e793e4d/lejinemejivazo.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_off00010766.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10766 5008 bytes
SHA-256: 21b35d23b251306674e81e21f81c3df18b991da06d6295f6526289cf47855a3d
font_01_sfnt_off00011863.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11863 11252 bytes
SHA-256: 06eb0c803a8f871e1544ff97b21aaa8f2a571339b1d94320c54e1b15abd1bdbc
font_02_sfnt_off00013ee7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13EE7 16164 bytes
SHA-256: ead7fd593d7f5feef6f283420e9b55f8fa4552f107c64b0063d474dd3355abd8

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