Malicious PDF — malware analysis report

Static analysis result for SHA-256 a152beca823c6887…

MALICIOUS

PDF

47.2 KB Created: 2020-10-04 00:32:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 437cef5cea21d5b6a86c907ba9a36293 SHA-1: de57cef324441d44926aaac023fd65788387b0fb SHA-256: a152beca823c688710e1b833fd210a4b1abf01ee940a31c3d375ae66be200ad2
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/pify?keyword=attic+fan+motor+and+blade+replacement In PDF document text
    • https://site-1043218.mozfiles.com/files/1043218/keboxusipoxozenisurefutog.pdfIn PDF document text
    • http://figapi.dashabazanova.org/uploads/1/3/2/7/132710657/3878499.pdfIn PDF document text
    • http://files.myqualitylifecounseling.com/uploads/1/3/1/4/131406592/tezad-nezakij-poravifed.pdfIn PDF document text
    • http://files.thompsoneducationassociation.org/uploads/1/3/0/7/130740211/dd750a49.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/1/0483/7149/9159/files/expresate_level_1_crossword_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/8837/4680/files/28901174878.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6797/4556/files/pobiwatikilowetekesobub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8696/1045/files/80586777645.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8501/1869/files/rate_of_change_table_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5d0bc0c2-8371-4a78-bf6b-ee9a212eb343/64598556129.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c782ad2-677e-44fe-8f56-5c10d0543eb9/fimotoxa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/49d6ce28-5f47-47ff-93af-770202093938/79509011378.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/61c8f2c0-e530-46cd-8e38-f520ddfdba05/22363463336.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/da31aece-d038-4d6e-b5f7-688f7daee71b/60467205239.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 6

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_off00006d0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D0B 5040 bytes
SHA-256: 714f0bc9d39a238ac985ac448a51371b9f4d3456826b410c56d1016316c6e064
font_01_sfnt_off00007dfd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DFD 10360 bytes
SHA-256: f21cc88fb76a01ee81b3a96e74d9037132bfc3eab0cff87ba3da175b8ce18b9c
font_02_sfnt_off0000a15e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA15E 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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