Malicious PDF — malware analysis report

Static analysis result for SHA-256 e229a67b04afe33f…

MALICIOUS

PDF

47.2 KB Created: 2020-10-19 05:47:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 3574591328bfdb007fd62b586163e3f2 SHA-1: e9395af5227680f8728175238922d2d65de5f7d3 SHA-256: e229a67b04afe33f4b3a517a2b23d21c3c8dbdd98df94942607f9c42dad33d65
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://cctraff.ru/strik?keyword=residential+steam+boiler+piping+diag In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366350/normal_5f87214ba7c06.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367633/normal_5f891f2792ef1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365662/normal_5f8a87538f936.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366343/normal_5f8ca0882d7c0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380859/normal_5f8c894c3693e.pdfIn PDF document text
    • https://sixapinipuso.weebly.com/uploads/1/3/1/3/131384402/9470672.pdfIn PDF document text
    • https://dokakida.weebly.com/uploads/1/3/1/3/131380589/tonewe.pdfIn PDF document text
    • https://kupugaxome.weebly.com/uploads/1/3/0/9/130969415/51ad8eeff7fa53.pdfIn PDF document text
    • https://zalawevovupat.weebly.com/uploads/1/3/0/9/130969727/doribosogu.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/1/0431/7400/2837/files/lizulotexutowitekom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9150/2269/files/rotukudunus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/4460/4584/files/star_wars_score.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/0562/6536/files/ifont_pro_apkpure.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/7527/2349/files/legal_age_to_buy_condoms_in_new_york.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0268/8575/0966/files/82749264875.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/9302/3638/files/anoka_county_library_hours_rum_river.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0488/4080/2469/files/14663447372.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/29f4c3b4-0b2b-43d9-92b9-3f49bdb4cb6e/harry_potter_envelope_template_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d8f0fc0-f6b4-4b5a-87f2-80716f68e145/75136473567.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1f0c6612-d875-4ecb-a5de-60dd55a81cb4/repagigukobikazafidigo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d72834e6-44e2-4008-8ff0-9e963a2838a8/89640690088.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/97a17f56-8a51-4e4e-94b8-48251b861399/fijikarufugokigilejafupen.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cff6772e-d1ba-4255-91e1-0ef0cde77266/62898687583.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a59d2f7c-2302-4017-a5e2-0655ed6cdff8/38107724154.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8623c06b-a162-4bf4-b2c6-be5a92f18b1c/zalarun.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_off00007ad5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AD5 5424 bytes
SHA-256: d6386c0e5894d7416d3213fe696b6481abfd9959cd40da6537f2e8b08d1a8f9e
font_01_sfnt_off00008d25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D25 9896 bytes
SHA-256: 965c0146764e510bbca678e65d41d4b013f71fe1ca381ace7b8de7eac38c6d4e