Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad743d2e95f53794…

MALICIOUS

PDF

53.4 KB Created: 2020-08-08 13:59:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 30c332e01335554c056d33c8c11897e1 SHA-1: 67c4d1b1a888e1d0bf88104d2a1d498f38240571 SHA-256: ad743d2e95f53794124601b65b6b7f72a4e3ab1cdb5aeed9f18d68c152c5f49a
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=understanding+life+science+grade+12+study+guide+pdf+download In PDF document text
    • http://files.holdenstudios808.com/uploads/1/3/1/8/131856186/312b9b0cc50cd.pdfIn PDF document text
    • http://files.everydayfreedom.co.uk/uploads/1/3/0/7/130775221/xazugorakodomek.pdfIn PDF document text
    • http://files.durhamcoc.org/uploads/1/3/0/7/130776088/ruwugodinuwe_rikelirazu_xatamilosum.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/1/0431/2478/5319/files/20435598898.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6239/4008/files/mipomavem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7896/7703/files/21070057402.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6656/4503/files/butusezuwujaniwomur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6038/8252/files/98678768.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1960/6936/files/82082131457.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2229/3920/files/kupegokabuzakakogemamut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1464/2069/files/how_to_add_modifiers_tinkers_construct.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4786/8826/files/lutimokuzuwi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5207/1074/files/wetodokujipekow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9141/8518/files/60544394308.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_off0000916a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x916A 5692 bytes
SHA-256: 29243e7664ca767d963bd854895500340c2871a579cd9b8f302cd1411759a5b9
font_01_sfnt_off0000a4fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA4FD 10444 bytes
SHA-256: fb7aba66ce5125cd6fd0b53f1177c004f6d1897717fc09b03d1518e94b358734

Open this report in the interactive analyzer, or submit your own file for analysis.