Malicious PDF — malware analysis report

Static analysis result for SHA-256 40d14187d3d7c8c5…

MALICIOUS

PDF

42.2 KB Created: 2020-08-09 16:56:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 240faac030f224134e6e6d2b4fe8a4ce SHA-1: 67d7d82dc295d1a37150b4c4a66dcf628efa541d SHA-256: 40d14187d3d7c8c5f28614fd1c8452c15c343f58170e0615622571e99a26715a
194 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.
  • 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.cc/pify?keyword=number+line+pdf+free In PDF document text
    • http://files.vapagirlsbuildla.com/uploads/1/3/0/7/130776485/tetenudufilunoz.pdfIn PDF document text
    • http://files.bowiedacapo.com/uploads/1/3/2/6/132695354/vifeb-bekutelexuvagi.pdfIn PDF document text
    • http://files.positivevibesonline1111.com/uploads/1/3/1/4/131437117/gadipagefusinevil.pdfIn PDF document text
    • http://files.rangerscowboysspursandhorns.com/uploads/1/3/2/8/132814306/vajaxutobadolipa.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/1/0433/0346/9206/files/fasinedafev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8076/2023/files/wogirepafefulexete.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3770/4867/files/nuzivejavoni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2779/9969/files/ati_comprehensive_predictor_2015.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4536/3610/files/electrical_technical_aptitude_questions_with_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9056/6556/files/manual_dexterity_examples.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0664/7717/files/5069109793.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3579/4340/files/xonusurotu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6338/6016/files/49565155609.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2816/0413/files/naruto_shippuden_episode_388_english_dubbed.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_off00006932.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6932 4908 bytes
SHA-256: 1faff8afced0075da7d8d4e24dd0d02161b1d4ad1cd7b173cc280501cec06cce
font_01_sfnt_off000079ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79CA 10060 bytes
SHA-256: 77fc3ae4a4ac263f1591725329e75d8451ca758afed1269a3bf75292c4c12370

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