Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f36bc4fb6fd0b1c…

MALICIOUS

PDF

73.2 KB Created: 2021-02-12 15:48:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 2463ad3ad560789c37af86ae24a339ce SHA-1: d39a8f06c53e24b59ced3cb23b1671cdff1e4939 SHA-256: 6f36bc4fb6fd0b1c00ef404349fac9bf6a905b0f5019eec0f5504398a66cec23
196 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ClamAV and an ML classifier. It contains a high number of external links, many of which point to SEO redirectors, including the primary URL 'https://jottigo.ru/wix?keyword=wish+promo+code+2020+june'. The document body, though partially corrupted, suggests a lure related to 'Wish promo code 2020 June'. The presence of numerous external links and the nature of the primary URL indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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.
  • 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://jottigo.ru/wix?keyword=wish+promo+code+2020+june PDF link annotation
    • https://cdn.sqhk.co/tororukiwuri/cN4uFgc/makeover_games_rising_stars_kate.pdfIn PDF document text
    • https://nemaxololele.weebly.com/uploads/1/3/5/3/135304154/sijofir_nipepex.pdfIn PDF document text
    • http://yellownatural.space/bifuxinagat36mr.pdfIn PDF document text
    • http://theboldpantsproject.com/watch_filipino_drama_eng_subxpuhl.pdfIn PDF document text
    • https://pagununida.weebly.com/uploads/1/3/4/8/134861868/9257199.pdfIn PDF document text
    • https://vumerajijo.weebly.com/uploads/1/3/2/8/132815742/belaw_rolavujupa_zituna_xawupid.pdfIn PDF document text
    • https://cdn.sqhk.co/bolukawet/iDAaShf/notakuxerokovukosunes.pdfIn PDF document text
    • https://cdn.sqhk.co/rugofufol/gePnifk/best_country_music_videos_2000s.pdfIn PDF document text
    • http://byseles.xyz/fake_gps_location_spoofer_pro_4._7_apkogjdr.pdfIn PDF document text
    • https://zajavaka.weebly.com/uploads/1/3/5/3/135322154/5f45b89275.pdfIn PDF document text
    • http://coloradocustomelectric.com/transformers_fanfiction_bumblebee_loses_his_voicee92ha.pdfIn PDF document text
    • https://cdn.sqhk.co/fabozesemi/jKPMBhi/t800_cyborg_vision_arlington_va.pdfIn PDF document text
    • https://cdn.sqhk.co/mavixuwaloz/dgey8Ed/jomadolimelivozotomomu.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/fajetufekejo/formaggio_brie_grasso.pdfIn PDF document text
    • https://s3.amazonaws.com/gumegulaxi/azonix_font_free.pdfIn PDF document text
    • https://s3.amazonaws.com/fidobakipivogit/jojigolimiri.pdfIn PDF document text
    • https://s3.amazonaws.com/sajatofubote/48376144427.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_off0000e18b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE18B 5436 bytes
SHA-256: 1a346f78405ef5eccd6e775e3e4d2db48455a9803693074cd5433ff0845932f3
font_01_sfnt_off0000f3f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3F4 10492 bytes
SHA-256: 07fbb8cca1c27dd24a9a18fab1c529dd72c5627b573c136c0ae90b9f4e20223c

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