Malicious PDF — malware analysis report

Static analysis result for SHA-256 a222073657e88177…

MALICIOUS

PDF

64.5 KB Created: 2021-02-24 15:36:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 66612e1f0e7177601f3c09ebe8f149b8 SHA-1: 0c2f985221cc182dbf6ee03687d83243ede5ce31 SHA-256: a222073657e8817763788a4be0710b783a722c68f3e40fb626d1d68aa649de31
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://leonvi.ru/wix?keyword=drip+tip+cover+caps PDF link annotation
    • https://limuvowefegepud.weebly.com/uploads/1/3/4/5/134509231/zisinajimer.pdfIn PDF document text
    • http://sluzhba1.net/409265024834x7rc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374013/normal_601682a6b5f98.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4462096/normal_5fe3de654c54e.pdfIn PDF document text
    • https://zavodazokexa.weebly.com/uploads/1/3/4/6/134632977/1399849.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4498994/normal_5fe51a7a3a9b4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487641/normal_6018cdd40d4a4.pdfIn PDF document text
    • https://rogipusuwegurak.weebly.com/uploads/1/3/0/8/130813654/jevofi_duwalop_rarososadivibef_zafakenafoz.pdfIn PDF document text
    • http://tomolijoponix.mypressonline.com/installing_sub_zero_door_gasket.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476925/normal_602ad0de93409.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/taturi/toolbar_template_kendo_grid.pdfIn PDF document text
    • https://s3.amazonaws.com/tarajix/beduvud.pdfIn PDF document text
    • https://s3.amazonaws.com/wazorixekunafob/34363635912.pdfIn PDF document text
    • https://s3.amazonaws.com/zobuwubedak/how_do_i_share_a_tweet_to_facebook.pdfIn PDF document text
    • https://s3.amazonaws.com/genukopapovixo/88634464846.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_off0000c212.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC212 4956 bytes
SHA-256: 7c7d69de204c8460c25255d8477beeff537e2ea6d36e5c91c9701327ec373d2e
font_01_sfnt_off0000d30a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD30A 10124 bytes
SHA-256: ad551edf59a44177d7912840df294d4b740259e399df101a1bf7d8599862df17