Malicious PDF — malware analysis report

Static analysis result for SHA-256 073e00a6579ee7fd…

MALICIOUS

PDF

82.5 KB Created: 2021-03-10 13:53:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: cc77cc3f83a6575fa44e4ab5a281b488 SHA-1: b2b97e6d0710144cfde1588d31edd0c5ff219772 SHA-256: 073e00a6579ee7fd92bad65def75f27f8d44ad097b80042c2356b8931a62702a
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains heuristics indicating it is a phishing lure, specifically using an SEO redirector to disguise a free download. The embedded URL points to a domain associated with malicious activity. While no scripts were extracted, the overall structure and heuristics strongly suggest a phishing attempt to trick users into downloading further malicious content.

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://bologen.ru/award?keyword=afrikaner+nationalism+essay+pdf PDF link annotation
    • https://cdn.sqhk.co/wukomidekepu/haHGhjK/ssf2_v0._9_android.pdfIn PDF document text
    • https://cdn.sqhk.co/paxofipixag/jcTwhcL/20223764956.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/gozifep/loneliness_hd_images_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/59749454-88c7-467b-9379-c5c18f105e03/obd_code_p0442_impala.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/856b98cd-31c0-4d68-96be-91e10b9bf37b/45571378631.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4fdf850a-43c6-4bee-bb2b-7d569a506b7f/magafixoven.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d31e7161-a309-4570-aa9b-725a70eb134b/57904145663.pdfIn PDF document text
    • https://s3.amazonaws.com/mefonevimimix/kamitovijadepifarefigo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/45705322-f31b-4cd2-98cb-38219601bc4f/on_the_road_to_mandalay_lyrics_kipling.pdfIn PDF document text
    • https://s3.amazonaws.com/paxivogedewilu/topeduwapazipewumiseka.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c77f379b-370a-466c-b105-b47a85f37e19/95312643308.pdfIn PDF document text
    • https://s3.amazonaws.com/dudujopixejikug/bhag_milkha_bhag_title_song_320kbps.pdfIn PDF document text
    • https://s3.amazonaws.com/gupojakami/vosemomajaw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/64a227a4-3a49-45ec-8c42-8a1dd73a9066/coleman_saluspa_hot_tub_error_codes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8bd05ec9-8bac-4ef6-934a-b63a9d6faf32/61601793215.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a30df79a-3ae3-4ead-9134-f4c63f3b5404/tugirubitegoxefomoriwazu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/21db8494-c984-4933-830a-a4a84b35af0e/samsung_sm-t350_case_best_buy.pdfIn PDF document text
    • https://s3.amazonaws.com/zonivezada/bible_names_with_meaning.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5ab5703e-6ce4-4d3a-800c-a36561e5cbea/4386213947.pdfIn PDF document text
    • https://s3.amazonaws.com/risalenefazozo/vekejakogopukuf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/81d6adbf-7961-4700-83c3-79494a2bc609/civ_6_gathering_storm_review_metacritic.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_off000106d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106D6 5344 bytes
SHA-256: 52e8bf0c5b3a7f299a4f2f83040917b0aaa85ddfc10e4f02442dd88ce8bcbb0c
font_01_sfnt_off000118fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x118FE 10456 bytes
SHA-256: b604a5da9ed86c397f28772c059cde696cf25957620457f86d1b406cd10340a4

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