Malicious PDF — malware analysis report

Static analysis result for SHA-256 19e7dfda38d4dfef…

MALICIOUS

PDF

44.6 KB Created: 2020-10-15 19:57:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: d505df643e8aea5679896ec97b66f98a SHA-1: 52f1545203d059b2c7c38a6dbd3c76e014032c33 SHA-256: 19e7dfda38d4dfefc48c0604a5d1a408cb9a9cd0a335c45cf703f1445e3c9aae
142 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.
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/123?keyword=computer+programming+book+pdf+bangla In PDF document text
    • https://cdn-cms.f-static.net/uploads/4368746/normal_5f879dd84ff67.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366398/normal_5f87fa47e07f1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366029/normal_5f86fc96093aa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365656/normal_5f872dc573bf7.pdfIn PDF document text
    • https://site-1043397.mozfiles.com/files/1043397/bolanugajowewalijefogi.pdfIn PDF document text
    • https://site-1039847.mozfiles.com/files/1039847/wufaze.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366007/normal_5f875a64a5d43.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366041/normal_5f870a2e8ccbf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368506/normal_5f882e423af4d.pdfIn PDF document text
    • https://fimozafovobas.weebly.com/uploads/1/3/2/7/132741130/d09f27f79c50.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/fubisi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb59de51-0125-4d4f-8de8-afa8851dd164/59252739889.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2788/9302/files/craigslist_raleigh_jobs_raleigh_nc.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/8030/9664/files/tukujewo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/5323/8430/files/cold_war_aims_worksheet_answer_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/2827/8179/files/pefezigevof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/0636/4312/files/robot_2_game.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_off000063d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63D9 5292 bytes
SHA-256: e4732f7d5a8910e5ff6867356c104c9266fb8ed34453d483efeba34577ae38d0
font_01_sfnt_off000075b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75B8 2096 bytes
SHA-256: 9f8eff03390f4acaaf00b60f121afe18ba4c2e5c518c4e7eced54e2ce79afe4a
font_02_sfnt_off00007f50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F50 10884 bytes
SHA-256: a51f48df631722032967a87cb70d2fcf6ed1908d07058d8a5d1fea5030cad410

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