Malicious PDF — malware analysis report

Static analysis result for SHA-256 15d654aeca1d755e…

MALICIOUS

PDF

48.1 KB Created: 2020-07-08 21:17:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 639b579a9747c9dc2afea6c6cf9ea151 SHA-1: 942fa3e662f1b11cd912957f0a21a7629ac20985 SHA-256: 15d654aeca1d755e986f65be4d0ddc4991f795fba1d423b8dbfe8d56041b372e
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded URLs, indicating a link farm or redirection scheme designed to lead users to malicious sites. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' specifically flags a URL pointing to known malicious infrastructure. While no scripts were extracted, the document's structure and embedded links suggest an attempt to compromise users through external web content, potentially for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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.cc/wb?keyword=principios%20ativos%20lipoliticos%20pdf
    • http://files.totalem.org/uploads/1/3/2/6/132695572/5016b.pdf
    • http://files.illinoisdelta.org/uploads/1/3/2/6/132681938/2186787.pdf
    • http://files.annagalatirealtor.com/uploads/1/3/0/7/130776718/979473.pdf
    • http://files.bellacalore.com/uploads/1/3/0/8/130814279/mumubimogamu-fupedevumebat-ropetiwajo.pdf
    • http://files.v23next.com/uploads/1/3/0/8/130813768/rililu.pdf
    • http://files.chicagoschoolofgrappling.com/uploads/1/3/1/4/131409170/312064.pdf
    • http://files.chenowethbairddesign.com/uploads/1/3/1/8/131871894/kawal_fudomur.pdf
    • http://files.upwellings.com/uploads/1/3/1/6/131607174/c3eb020e.pdf
    • http://files.chromedancecentre.ca/uploads/1/3/1/3/131383889/sefomufaxigigaxu.pdf
    • http://files.heatherseagraves.com/uploads/1/3/2/3/132302774/nufigidoruz-reverime-mojavo.pdf
    • http://files.lightningridgerealestate.com.au/uploads/1/3/2/8/132815961/tuwor.pdf
    • http://files.artlynchactingcoach.com/uploads/1/3/1/3/131380868/tagaxe.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://wewokonor.files.wordpress.com/2020/06/19504901958.pdf
    • https://ziradodenu.files.wordpress.com/2020/07/bazokitoweduvirafunadimad.pdf
    • https://jopawetudame.files.wordpress.com/2020/06/36681251751.pdf
    • https://nadidajena.files.wordpress.com/2020/07/tasisexiduruvegoselidus.pdf
    • https://doluwamesiwe.files.wordpress.com/2020/06/94772395814.pdf
    • https://wuweponanode.files.wordpress.com/2020/07/jogajukowo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/21244882445.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/52325197595.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/97697777452.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kewosa.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/telisupuf.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/18410569865.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/33374625424.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • https://doi.org/10.22289/V3N2A10
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007aa1.bin
b34afd1682ffd9af640523eea19b90b68698423f19a8d508e3b41ec5fe11d61e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7AA1 4880 bytes
font_01_sfnt_off00008b30.bin
f1924b60d66b493acbde8d3fcc6da3c5ec5864128687a56384efa1775b756b7a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B30 12784 bytes

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