Malicious PDF — malware analysis report

Static analysis result for SHA-256 43059be12c98dafc…

MALICIOUS

PDF

35.0 KB Created: 2020-08-17 10:42:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: e90d4410a2de62bd09c4aa5291ee3bad SHA-1: 324fce1552ab8049b8b2d2114e63fdf0454a7ca5 SHA-256: 43059be12c98dafc29a1c69198ae8d25c3b48d66621e402c630e2b3366963f90
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=lagu+barat+gratis+mp4 In PDF document text
    • http://files.courtneyalexanderdesign.com/uploads/1/3/0/8/130874587/5473a5869a23e.pdfIn PDF document text
    • http://files.grippsplace.com/uploads/1/3/1/3/131383748/wekomegolilidi-leremisaf-fowuguluw-muguwemaxidomif.pdfIn PDF document text
    • http://files.chrome57band.com/uploads/1/3/1/1/131163902/8304921.pdfIn PDF document text
    • http://files.zyzzyx.band/uploads/1/3/1/3/131378952/sugetotopavifu_vuvado_bulapiku_jigakuwuru.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/1/0432/6470/4662/files/92116636396.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7198/7098/files/pokemon_crystal_rom_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6668/7642/files/circle_theorems_gcse.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6084/7004/files/how_to_cancel_directv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1756/0473/files/77118254996.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1835/3821/files/gone_girl_subtitles.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8370/1151/files/26024227494.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8062/9913/files/63128234973.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4768/8091/files/chemistry_notes_for_ssc_cgl_in_english.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8678/2369/files/29533651640.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1599/4529/files/gefanajijawulenuwogojo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6341/0845/files/kedafisegofopumoje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8221/1733/files/8204097454.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1098/0000/files/dutaliwobuvone.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0641/8331/files/materi_sintesis_protein_lengkap.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_off00004c41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4C41 5276 bytes
SHA-256: 121c891779ec45fcaf96f614a91027dee021e4dac5cf4945d27c29fee563eb14
font_01_sfnt_off00005e1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E1F 9660 bytes
SHA-256: c30a129f1eb1067dbb41b9bd031be21b327f477ba6570f79c3c9bc76e604f384

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