Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e3b490862388503…

MALICIOUS

PDF

47.4 KB Created: 2020-10-13 18:34:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 81b54ffe2f0a5ed5cf82b8130659402b SHA-1: f5ca77a4adce6001976dde5e2ea39fb96d579cae SHA-256: 1e3b490862388503d116d3ebb398531377270078e8f804467a703377e54d0e46
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=microsoft+sculpt+comfort+mouse+user+manual In PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/vigirupiruwovilav.pdfIn PDF document text
    • https://zafozudakajadev.weebly.com/uploads/1/3/0/8/130814863/xujewonagamaxu.pdfIn PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/palaj_xofepevez.pdfIn PDF document text
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/3355978.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/zikarab.pdfIn PDF document text
    • https://fijojonibiw.weebly.com/uploads/1/3/2/6/132681787/a8401ec7a9859.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://cdn.shopify.com/s/files/1/0484/7711/0422/files/marco_polo_parents_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/0067/1652/files/squirrel_cage_fans_for_sale.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7030/7995/files/warframe_fish_oil_tradable.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5670/8254/files/32107059524.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dcaa7e38-9677-46ad-a33d-dad34b3db24b/dugekawifebajorimowuzes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb204334-e4d7-4da9-98f8-455427c82a0a/80491161334.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fce5b1b0-c27c-458f-87ff-2a990c994f82/5362267054.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bc333594-e107-44ee-a14b-c34a8af7cf49/wosiwipositidakuwitadi.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_off00006eee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EEE 5048 bytes
SHA-256: 0586085c90f8a70c78f4c080961ab417e515e008349059ee1832a9b838758755
font_01_sfnt_off00007ffa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FFA 9984 bytes
SHA-256: 52e4a3e7a7f882cf8ded52beb1503b26483b7061d7318108f3efb36d18c0801c
font_02_sfnt_off0000a225.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA225 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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