Malicious PDF — malware analysis report

Static analysis result for SHA-256 0bf452a311d5f82c…

MALICIOUS

PDF

50.7 KB Created: 2020-11-02 05:06:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-02
MD5: 21daf61674ac0d7756330052688971e0 SHA-1: 4fc65738bc34fdc076bb0ab555c7b51cc0584641 SHA-256: 0bf452a311d5f82ca3c981da497f49c7ca0e4d25d2eabaaeb8752d9df129961b
154 Risk Score

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.
  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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.cc/123?keyword=cuisinart+coffee+makers+dcc+500+owners+manual In PDF document text
    • https://pupaxutakigi.weebly.com/uploads/1/3/4/5/134579126/4574963.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000858b.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000858b.bin)
    • https://cdn.shopify.com/s/files/1/0494/1211/2551/files/20627049330.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0506/8482/1681/files/dnd_5e_skeleton.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9692e551-6363-4984-a03d-ffa3acccbd53/fopepolad.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6f39fa5e-cc47-4345-867a-b63fae883b82/fifugijunokezolugi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/2331/0260/files/15387685423.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6054/4156/files/mofasaxekuzelibimolifeku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0268/7726/4046/files/sixamowijafarejenikuv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/06ad4a51-f964-4236-911a-a1ee0f560abc/33710825229.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5573/4167/files/55431673587.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/3710/0694/files/55717939917.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/785edba4-6cb8-48b3-b836-6a4d75b72c2f/badutan.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 extracted file (font_00_sfnt_off0000858b.bin)

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_off0000858b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x858B 5492 bytes
SHA-256: 0b8c1297e9b3c065aae541b5a42a2eb57dfa310b9278333cf0297b651226e53b
font_01_sfnt_off0000983a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x983A 11224 bytes
SHA-256: d87655f8f8384e12c8ce07e0406178f08b60b0d28faebb4e87cd2b2939dd2ffd

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