Malicious PDF — malware analysis report

Static analysis result for SHA-256 41e7e34adc9d47ea…

MALICIOUS

PDF

44.7 KB Created: 2020-10-23 00:26:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-25
MD5: bd3e0a4c74ceb88a2db1816b5d0399a5 SHA-1: c292d1bc2f4045ca7b2cfe6d482d2f14e46645bc SHA-256: 41e7e34adc9d47ea684a69e3ad846c32003bec8a0bed6bb70fe0ae96251e6e92
202 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://ttraff.me/123?keyword=up+procurement+manual+pdf In PDF document text
    • https://gujodoludota.weebly.com/uploads/1/3/2/6/132681740/6073fb2b614e65f.pdfIn PDF document text
    • https://bogadisosupotaj.weebly.com/uploads/1/3/0/7/130776541/d2f2ed23903f3.pdfIn PDF document text
    • https://tumixivig.weebly.com/uploads/1/3/1/6/131636813/8083002.pdfIn PDF document text
    • https://mixorone.weebly.com/uploads/1/3/1/4/131438240/5c5f7b.pdfIn PDF document text
    • https://turomanusogagi.weebly.com/uploads/1/3/1/4/131453559/dadojiwisixak-watokuzadijigi.pdfIn PDF document text
    • https://pepisukuwen.weebly.com/uploads/1/3/1/6/131606293/vulodosutugobepa.pdfIn PDF document text
    • https://repugonajipivup.weebly.com/uploads/1/3/0/8/130814926/nulawonifepakinoj.pdfIn PDF document text
    • https://fifowekuvepu.weebly.com/uploads/1/3/0/7/130776735/zebevawipe.pdfIn PDF document text
    • https://mupibidegupek.weebly.com/uploads/1/3/0/8/130874042/8331384.pdfIn PDF document text
    • https://kiseridebajesa.weebly.com/uploads/1/3/1/4/131408791/1813485.pdfIn PDF document text
    • https://tevirilozarenov.weebly.com/uploads/1/3/2/6/132695732/kimoku_nolumibanovul_bunoganulojiduf_kumuwulisel.pdfIn PDF document text
    • https://kelobutino.weebly.com/uploads/1/3/0/9/130969458/2189261.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/memul/psychology_class_12_chapter_8.pdfIn PDF document text
    • https://s3.amazonaws.com/leguvefu/9740961360.pdfIn PDF document text
    • https://s3.amazonaws.com/lupuvogotog/bridging_ligands.pdfIn PDF document text
    • https://s3.amazonaws.com/gadumagabusodel/baxorege.pdfIn PDF document text
    • https://s3.amazonaws.com/lorifawuvawot/munufagemabavij.pdfIn PDF document text
    • https://s3.amazonaws.com/gomakobez/asset_management_system_project_report.pdfIn PDF document text
    • https://s3.amazonaws.com/zetare/sepokerewesomavoduwegub.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fb3bdece-54ea-4cf0-ae5a-11037d073c82/67557740135.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/367872d0-9aa4-4321-bd45-a7429f36dd9f/college_physics_serway_7th_edition_p.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1ca2f5a4-660c-45ec-a6a1-046dcd6e6aae/tagutopuxarijipodebol.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_off00007141.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7141 5116 bytes
SHA-256: 9f20262dc2d4fd397e0f7f8c15d377296653a86718ccd1799b3b35dbca11c6cb
font_01_sfnt_off00008291.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8291 10136 bytes
SHA-256: 378a128a1677a899be18ac88f08cbfa58f3bfcb698d34f6aa2a6d4b09bd618c1