Malicious PDF — malware analysis report

Static analysis result for SHA-256 8207cce7dfaf9d6c…

MALICIOUS

PDF

39.8 KB Created: 2020-10-30 22:51:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 7edb83435449172b78c42530efc8019d SHA-1: a99e6be687262c813d04ff3b80906af1615cc285 SHA-256: 8207cce7dfaf9d6c864606c6c3c65e13a0d6f8f53cd11bccfec4f345a4321c97
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.link/pify?keyword=where+to+watch+zombieland+1 In PDF document text
    • https://vimiwegom.weebly.com/uploads/1/3/0/7/130775837/fufumul.pdfIn PDF document text
    • https://baletepo.weebly.com/uploads/1/3/0/7/130776023/48f855e628.pdfIn PDF document text
    • https://nipogoloduvi.weebly.com/uploads/1/3/4/3/134368022/wewaxonu-maluki.pdfIn PDF document text
    • https://zegojipoxe.weebly.com/uploads/1/3/1/0/131069766/2030274.pdfIn PDF document text
    • https://xumogimunosu.weebly.com/uploads/1/3/1/6/131607683/b9ae3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408718/normal_5f9496bc01b81.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/wizidimawag/carbohydrate_fermentation_test_procedure.pdfIn PDF document text
    • https://s3.amazonaws.com/xisakazelelinim/tabojojo.pdfIn PDF document text
    • https://s3.amazonaws.com/regovadeje/actuarial_mathematics_for_life_contingent_risks.pdfIn PDF document text
    • https://s3.amazonaws.com/vazisi/post_workout_stretching_routine.pdfIn PDF document text
    • https://s3.amazonaws.com/leguvefu/lp_hernia_inguinalis_lateralis.pdfIn PDF document text
    • https://s3.amazonaws.com/gadumagabusodel/fiwekisopanobuvofadodute.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/771e1098-d86e-4cb0-ac24-bb2ed5a39624/jinevukuxigutulex.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_off00005977.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5977 5348 bytes
SHA-256: 9fde30f831ec822db0a7ab5baeb0f48aa2ff8eb4de56e0115d2a4537fceac6af
font_01_sfnt_off00006b9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B9D 11428 bytes
SHA-256: 982610df512d9785df3f332792c5f02c114c8c9145b531ee0b7037f62f46e4a9