Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c72c071617412aa…

MALICIOUS

PDF

41.1 KB Created: 2020-10-06 12:14:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 34267d7e229fc62a20b8e5d1d16d6678 SHA-1: e2618adf4e602ff51419a7a1d3416d1c7929c89a SHA-256: 9c72c071617412aa892dc8a1ef077e4d50fcf72cc81cccf3d17274b56e150070
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://gettraff.ru/pify?keyword=magic+tree+house+dinosaurs+before+dark+free+pdf In PDF document text
    • http://files.homegirlstylekc.com/uploads/1/3/2/7/132710780/cac6a941a.pdfIn PDF document text
    • http://defetag.timwilsonfineart.com/uploads/1/3/1/1/131164366/3735451.pdfIn PDF document text
    • http://gofixodu.kidscastleschoolageprogram.com/uploads/1/3/1/8/131856293/fipezowur_luxusuxagudajar.pdfIn PDF document text
    • http://files.mcyouthfootball.com/uploads/1/3/1/3/131381756/kidar.pdfIn PDF document text
    • http://gazoxiweg.gileadlab.net/uploads/1/3/1/4/131453565/025a418.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/1/0433/8935/4142/files/fuji_finepix_ax655_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/8422/1083/files/pathfinder_high_elf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/5250/1658/files/78007594674.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/5557/9046/files/english_skills_with_readings_9th_edition_answer_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/0287/9903/files/78449306053.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0465/2780/7646/files/55418522955.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ad1e592b-269e-4f2a-8e14-05a82a17ec0a/jalevazeparexudaduxefanuz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/50950305-b768-46ea-938e-9ab1d963be49/27023941741.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c5edfb29-b06a-4edc-9d40-0ae8ec42f5b0/24978705283.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bfb1afe3-4cd2-426f-ab17-ab7d04c912a1/fomax.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_off00006221.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6221 5592 bytes
SHA-256: 79169e2ce6acbf2184fa287b5754dcf9b72c99a74e6b5cf70ec280cd6e8fdb8f
font_01_sfnt_off0000752f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x752F 10076 bytes
SHA-256: 569c92edbb3d8f839e89f6338947f9197847e23ae4ef064b5a4f1120e9d8f142

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