Malicious PDF — malware analysis report

Static analysis result for SHA-256 6076699bb696f9cb…

MALICIOUS

PDF

72.6 KB Created: 2021-03-01 06:49:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: da3dcc03db93d51aa9c9f9a86ebdce96 SHA-1: da410495c0a3e481c08a013a5301e74aaae9f644 SHA-256: 6076699bb696f9cbbfbe46bfb7c4f7b8879768eaf054834a3b46f4a942aa4c66
196 Risk Score

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://botokaw.ru/wix?keyword=ashrae+pocket+guide+for+air+conditioning+pdf PDF link annotation
    • https://jujipepovoduvu.weebly.com/uploads/1/3/4/0/134017188/1298082.pdfIn PDF document text
    • http://vijexibat.mywebcommunity.org/dimomoneba.pdfIn PDF document text
    • https://wegujelad.weebly.com/uploads/1/3/0/8/130813898/kuzegaladomofinuviga.pdfIn PDF document text
    • https://jinobodusere.weebly.com/uploads/1/3/4/7/134722577/xojinokuvebezudoda.pdfIn PDF document text
    • http://pewadulojuba.mypressonline.com/56442455973.pdfIn PDF document text
    • https://kurinasuvofete.weebly.com/uploads/1/3/5/3/135334761/futivaxu.pdfIn PDF document text
    • https://vusimipemukebev.weebly.com/uploads/1/3/0/8/130814393/747ebfb93f.pdfIn PDF document text
    • http://nexofozupugasi.mywebcommunity.org/kokemuzewafowesu.pdfIn PDF document text
    • https://tegidaweriwasul.weebly.com/uploads/1/3/1/4/131483440/9f66f6b2c7ca.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/sazomo/siteruwis.pdfIn PDF document text
    • http://bepolujogox.atwebpages.com/merovevipolaro.pdfIn PDF document text
    • https://s3.amazonaws.com/wutogugej/16147400687.pdfIn PDF document text
    • https://s3.amazonaws.com/mukutud/blow_by_blow_song.pdfIn PDF document text
    • https://s3.amazonaws.com/bejokazemur/child_protection_policy_template_ireland_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/fatikonavori/best_python_machine_learning_online_courses.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_off0000df6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF6A 5440 bytes
SHA-256: a55b3a32b73dba8b73fdbbedf1d8239399adf56aea4fc7e424ac7aaf1e2d978e
font_01_sfnt_off0000f1e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1E9 10380 bytes
SHA-256: baebd517b068d741c4ef50dcc845e1fde894c8508523cc8aaaa698a2a3bfb3ef