Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba36b1503995439f…

MALICIOUS

PDF

71.7 KB Created: 2021-02-05 13:16:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 46686d1f091cd5707d696bde5fa88f07 SHA-1: 7d4dbe0311c787f0461cfacc455a548a181e7963 SHA-256: ba36b1503995439f7922c062425b00aa8ddc779a268720dc01de3cdf46ab3c2a
204 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 7

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/123?utm_term=sims+1+complete+collection+free PDF link annotation
    • https://lepomanorep.weebly.com/uploads/1/3/4/8/134856804/6508469.pdfIn PDF document text
    • https://mizevazorabij.weebly.com/uploads/1/3/5/3/135347525/lugexazuboleziv_biwesokuwubizib_mapigupole_gaweribepaw.pdfIn PDF document text
    • https://wemijixug.weebly.com/uploads/1/3/4/8/134888196/bexej.pdfIn PDF document text
    • https://xaxarudo.weebly.com/uploads/1/3/0/7/130740130/db19b6e33f057.pdfIn PDF document text
    • https://boferisavupase.weebly.com/uploads/1/3/1/3/131384298/lakusudolofor.pdfIn PDF document text
    • https://mumilupoj.weebly.com/uploads/1/3/5/3/135351188/nowovapovibarusezol.pdfIn PDF document text
    • https://vunafenivanisip.weebly.com/uploads/1/3/5/3/135303543/nuzesim-sidizozafi-jodatikiji.pdfIn PDF document text
    • https://cdn.sqhk.co/fujotojaxob/ihr9jfU/oscar_pistorius_30_for_30_episodes.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/paropabaru/game_project_igi_full_crack.pdfIn PDF document text
    • https://s3.amazonaws.com/bulujono/wepudujiwu.pdfIn PDF document text
    • https://s3.amazonaws.com/fifuto/roman_numerals_worksheets_for_grade_5.pdfIn PDF document text
    • https://s3.amazonaws.com/lixasifasi/60034911823.pdfIn PDF document text
    • https://s3.amazonaws.com/padadutiseni/rusovubijubodadilesuz.pdfIn PDF document text
    • https://s3.amazonaws.com/bogijexu/pubazibuzavivixowir.pdfIn PDF document text
    • https://s3.amazonaws.com/gupawupigawono/beelzebub_episode_52_sub_indo.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_off0000ddd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDD7 5108 bytes
SHA-256: e17fa09f97f6838337e07a0814b177306dd73ad830ba767f2af97c9789338861
font_01_sfnt_off0000ef2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF2F 10232 bytes
SHA-256: f5c318531de53ed63334325b4de0dc0519056fa41ea0f3b76de26a9cbd291160

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