Malicious PDF — malware analysis report

Static analysis result for SHA-256 25886d627df80fc1…

MALICIOUS

PDF

66.3 KB Created: 2020-11-09 04:57:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 863ab7eaecaea82dc39ced63852c7ef8 SHA-1: 4c84ac12fb68f24424519682e1bb35c5b8fe61f5 SHA-256: 25886d627df80fc16232c64f96732fb9e732d5d26da149e2895f1a2a60edd5ac
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafficel.ru/aws?keyword=contour+next+one+manual+english PDF link annotation
    • https://lowizozexide.weebly.com/uploads/1/3/0/7/130776176/3371310.pdfIn PDF document text
    • https://mofivekirupu.weebly.com/uploads/1/3/2/7/132740685/71d86a1.pdfIn PDF document text
    • https://vujofuda.weebly.com/uploads/1/3/4/3/134375628/tedanibusamumusida.pdfIn PDF document text
    • https://sebanibukuj.weebly.com/uploads/1/3/4/3/134354661/monederi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/fdea096f-7f19-4dce-868a-057afba175e1/the_axe_of_sundering.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0da1cc29-d4a8-4726-9252-6b710982bfea/52177995437.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9038df3e-1047-46df-8304-6b2d147970c6/99094031374.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/career_path_law_vk.pdfIn PDF document text
    • https://s3.amazonaws.com/didowugorokirug/pubojefovozojod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f220556-ade2-4d24-9ecd-1fab358e036a/gospel_song_lead_me_guide_me_along_the_way.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0ebc2764-0536-46f7-af97-229c189e90b0/runescape_ripper_demon_familiar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d2c894e2-afb0-489f-adb9-8f252c301f23/27241872578.pdfIn PDF document text
    • https://s3.amazonaws.com/nefagolom/vivipuxiruritulabofazora.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cc0485b3-2247-44b1-86b5-36418df039ec/survivors_true_stories_of_the_holocaust.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 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b43d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB43D 5072 bytes
SHA-256: 05840c6a02879a62e2775059e72bfa2de34f7b95de53cb8ce2eb142a7d5a76d0
font_01_sfnt_off0000c551.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC551 11428 bytes
SHA-256: db9837aab8bef0279fc8f32ebcdcaae6c6df67a69a3a43b921c521a8fd60830a
font_02_sfnt_off0000ec40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC40 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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