Malicious PDF — malware analysis report

Static analysis result for SHA-256 795c1b138a4cbdbb…

MALICIOUS

PDF

62.2 KB Created: 2020-12-17 07:45:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-06-20
MD5: 229546a99036f20d4daa9ed546dcadf8 SHA-1: e8701a7b17a3595b121d6aa23772f3274b97798e SHA-256: 795c1b138a4cbdbb03c70bfdada986233440a0f2dcccb9423aa892afe4eac668
254 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://traffmen.ru/aws?utm_term=seek+thermal+compact+pro+android In PDF document text
    • https://zopodiwozexuma.weebly.com/uploads/1/3/4/7/134737972/a580c9e18fac838.pdfIn PDF document text
    • https://sijevunima.weebly.com/uploads/1/3/1/8/131859613/fibogavefelelezok.pdfIn PDF document text
    • https://vopevejefed.weebly.com/uploads/1/3/1/6/131606133/bitenusimuwimenoro.pdfIn PDF document text
    • https://firaxefa.weebly.com/uploads/1/3/4/6/134694685/e37a7c3c22028.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc34985239b07229140aab6/t/5fc848067ff5a343ebefd440/1606961162662/disney_battle_heroes_forum.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b33f79fa-9cc7-46fb-b80e-950d057e645b/60829344909.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b3d9abdb-1764-4849-b84f-bfee3c110146/wimivalot.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/935e2e02-6e04-4633-a433-4f3af91c889b/walk_dont_run_tabs.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ad678fe3-8d45-44ef-89ec-80734c582322/90756219414.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc1641b6b97992eb55f7d52/t/5fc576a061e25426e1f13714/1606776481175/gone_girl_full_movie_online_in_hindi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d50b809f-6831-479a-a520-c30e285cf507/fidili.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9193f0c9-e688-4f58-9d09-9073212aebbd/86049555852.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7bd1ee8c-2108-4364-a6f1-bf5880e8688f/30169172309.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0beec7848ba205d17c35e/t/5fc51718f3de5e49b506d1cd/1606752024360/sartaj_sahni_data_structures_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/20e621d6-31b2-447f-bda4-b52eee0b2b12/36935023145.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_off0000b53e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB53E 5300 bytes
SHA-256: 88da89170a877a4aa8cd46b7a56ee008f1498e14bf0b9277d2ff019937887a38
font_01_sfnt_off0000c717.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC717 11144 bytes
SHA-256: c81deb74a70c2fa012087ddfac05b5e5d68a1e9f32995af0ff12e4d7f5819909

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