Malicious PDF — malware analysis report

Static analysis result for SHA-256 b34c2f36032dc7ea…

MALICIOUS

PDF

43.3 KB Created: 2020-10-09 14:46:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 1170846b278542c92d54862a2c576657 SHA-1: 65086cb7c2788c3cc1e90b0ba9be7d98e74a199b SHA-256: b34c2f36032dc7ea26acb1207d4e673eee9e0b52627ecdf0cbbca7e9a54e18fb
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://gettraff.ru/strik?keyword=in+small+things+forgotten+pdf In PDF document text
    • http://famuke.kidscarouselbg.com/uploads/1/3/2/7/132740541/196bf.pdfIn PDF document text
    • http://files.newadventuresamejourney.com/uploads/1/3/0/7/130775223/5470546.pdfIn PDF document text
    • http://files.ikorta.com/uploads/1/3/1/4/131453010/779bc.pdfIn PDF document text
    • http://xosap.drmandiegillette.com/uploads/1/3/0/7/130739024/1281318.pdfIn PDF document text
    • http://files.healingvaccineinjuries.com/uploads/1/3/1/4/131437603/vijuxiza.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/7639/6227/files/zivogalunos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/0375/0811/files/proc_freq_sas_output.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8788/7526/files/zeki_7_capacitive_multi-touch_tablet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3295/1446/files/gufow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/7205/6215/files/dream_league_soccer_2016_mod_apk_obb_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ff7ef329-b1aa-4de5-a71c-cb336d0fba08/bunazejevovakuzigov.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88841ef9-763e-484f-a4a0-432c378cfdad/56536824987.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/362c33e2-963e-4eb2-ae9a-07a420802f9e/risusijuwepanefekifude.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/08968612-cf49-40ce-8df3-24f28eb573cd/81826169571.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
🗂 Part of campaign: newadventuresamejourney.com 6 samples

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006bd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BD7 5392 bytes
SHA-256: cebfe9f52b7f89584e1e0d8d8930dac6ba8760c55eff88a9bd61fc673058c73b
font_01_sfnt_off00007dfe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DFE 10120 bytes
SHA-256: 90efea40270570dc491a2b278512d40b033a9773e686db23238867b90fe4ce13