Malicious PDF — malware analysis report

Static analysis result for SHA-256 07d91beaf4443b65…

MALICIOUS

PDF

46.2 KB Created: 2020-07-23 03:37:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-04
MD5: 6419682440402f0ca98eabdec2e78b17 SHA-1: 200fbbdb29498e662327247b39672a554afd409e SHA-256: 07d91beaf4443b653b4cffa1d031aca9ac5bcd1451a684dc3558f91c89933f06
194 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating it's a redirector and part of an SEO link farm, designed to lure users to a malicious URL. The primary redirector URL is 'https://ttraff.com/wb?keyword=judge%20lynn%20toler%20book%20pdf'. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to deliver a second-stage payload or phish for credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://ttraff.com/wb?keyword=judge%20lynn%20toler%20book%20pdf In PDF document text
    • http://files.thethinkingnurse.com/uploads/1/3/1/6/131607683/8574619.pdfIn PDF document text
    • http://files.bethbooram.org/uploads/1/3/1/4/131437493/4358940.pdfIn PDF document text
    • http://files.suzielhafez.org/uploads/1/3/0/8/130873717/puzoduzinowumapo.pdfIn PDF document text
    • http://files.onpointc.com/uploads/1/3/2/7/132740905/9384950.pdfIn PDF document text
    • http://files.rbeauchampgallery.com/uploads/1/3/1/3/131382092/mumilolitimewafo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4649/2565/files/dofiwewopimuzalisu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0878/5562/files/16006284405.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/669297692.pdfIn PDF document text
    • https://sidakosobo.files.wordpress.com/2020/07/sesazijapenukap.pdfIn PDF document text
    • https://zoluvarij.files.wordpress.com/2020/06/35913945339.pdfIn PDF document text
    • https://punutezelo.files.wordpress.com/2020/06/40467509867.pdfIn PDF document text
    • https://bemivoz.files.wordpress.com/2020/06/64475987974.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4658/2944/files/34655882342.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8706/8322/files/gugisex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0839/2353/files/39547005225.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2806/2109/files/27525691330.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8249/7701/files/80232397285.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/0173/0456/files/mewezaxobiwidaseto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3331/1904/files/88634435316.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000784b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x784B 4948 bytes
SHA-256: d6dfc021f08a32f07a837ca1776dfa8dd108a0b41a1205ab621eceffda9400b4
font_01_sfnt_off00008936.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8936 10008 bytes
SHA-256: a50d84b600b3de275ac728bf2131d63691c24bb7702095330143a998171bd3e0

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