Malicious PDF — malware analysis report

Static analysis result for SHA-256 1622ee0d6aa95c71…

MALICIOUS

PDF

44.2 KB Created: 2020-10-05 18:40:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: ab405a4b7b431fe6e762d1d8568d3fde SHA-1: 55578753a06a988c25048f4854020e36895703d3 SHA-256: 1622ee0d6aa95c71c4953ca0b9babbbb6f96a7271f0e2ce9be73e3053dd73e2b
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://ggtraff.ru/strik?keyword=geometric+sequence+problems+with+solutions+pdf In PDF document text
    • http://sivujixi.scottalanwarner.com/uploads/1/3/1/1/131164250/manepoxodikupesek.pdfIn PDF document text
    • https://site-1036805.mozfiles.com/files/1036805/resigofofukewuselomofi.pdfIn PDF document text
    • https://site-1039906.mozfiles.com/files/1039906/bemefasogofabu.pdfIn PDF document text
    • https://site-1042942.mozfiles.com/files/1042942/9372299052.pdfIn PDF document text
    • https://site-1037121.mozfiles.com/files/1037121/89095651208.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/06c4f103-4a02-4d08-a738-6b3c4ba8507a/wirizezaduwinuwipeguxaw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c663e3b9-bd9e-465e-bc22-a6967e1e8e31/82757500987.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b05e0389-366b-44bb-b1c4-99618d3d2b9a/69809976495.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b6bc503d-7d4c-4426-87cd-cfc12829f83e/josajiteruk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/56b866c5-051c-47de-bd3d-2887230c7199/jokiruzulasi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5d36bed3-c2fb-4727-812c-905f40f0483d/94001026304.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a4d0061-13ef-4fe1-adb6-56187efbeab6/84414311506.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e725cdf3-2390-4abd-a315-e6a8679a0e85/46973132944.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_off00005e50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E50 5456 bytes
SHA-256: 7d605a74fc0f3f6f71a3554611d775d60c61e35797ed56b8a834a1be40b32e13
font_01_sfnt_off000070bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70BC 10920 bytes
SHA-256: b93c4a58a7166ff7b4efc954df25d8315e6c00d017cabb0abf9c94f02202287d
font_02_sfnt_off000095bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x95BD 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

Open this report in the interactive analyzer, or submit your own file for analysis.