Malicious PDF — malware analysis report

Static analysis result for SHA-256 48ee8377f6cd9066…

MALICIOUS

PDF

40.9 KB Created: 2020-10-07 21:34:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 23fecfb60c5c61e53aff7fc8c9fdc876 SHA-1: 7ad829bf5107c883ae0041eeef579f8bbb3e0f78 SHA-256: 48ee8377f6cd9066386615340e30d4a94319cdfd6132b10e4b14ecb821595a6b
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://ggtraff.ru/strik?keyword=word+to+pdf+converter+download+apk In PDF document text
    • http://miwapan.trailerfestrally.com/uploads/1/3/1/0/131070001/10fc720f1600d5.pdfIn PDF document text
    • http://files.lmpac.org/uploads/1/3/0/7/130739204/derujesebepa.pdfIn PDF document text
    • http://satanovu.brianjlucas.com/uploads/1/3/2/8/132815793/xifufegobilesu-debatakiwib-nebevidupedor-kobafejetofage.pdfIn PDF document text
    • http://xesuvoda.meredithcawley.com/uploads/1/3/2/3/132303286/ziraxemagur.pdfIn PDF document text
    • http://files.shaunandken.com/uploads/1/3/1/4/131438046/6955dc.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/1/0436/9078/6969/files/laser_x_instructions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/6074/3329/files/54070417721.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5312/0679/files/97548367725.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4093/0983/files/96411896871.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/2659/1127/files/prisoner_b_3087.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0478/1454/1471/files/nepowezorawalaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/2026/6915/files/board_games_black_friday_walmart.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/0949/3160/files/the_new_body_type_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/1841/9865/files/72910554987.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fece1ebc-0b76-491f-9d88-b8c46d6d2522/69300854058.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0241a101-89a2-4210-a544-a3e3c966d141/59288074234.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 5

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_off000061ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61AB 5200 bytes
SHA-256: d5302aaaac10105c2f291b1f6524e62092a5ce6915f6076ab9bc766ca7f09b69
font_01_sfnt_off0000738c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x738C 10348 bytes
SHA-256: acc9eb794f75a7c4e210ef5e9316a5c261f197d9b2af2e0e81ba9e37a2a060f4

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