Malicious PDF — malware analysis report

Static analysis result for SHA-256 007e0430b783fa69…

MALICIOUS

PDF

40.6 KB Created: 2020-08-10 11:18:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a4ddced2d1467066f384d00f7064eaa6 SHA-1: d6eb21fc7b6046dce03a1b529742e20f7d4b6608 SHA-256: 007e0430b783fa69066b21a2c7d559b7a295c782012414f5ec60ec301bb6892c
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains multiple embedded links, with one prominently leading to a known malicious redirector. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, contains a URL that mirrors the malicious redirector's target, suggesting a lure to a site that likely hosts further malicious content or phishing pages.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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.com/pify?keyword=physical+science+concepts+in+action+book+pdf
    • http://levabafa.shenaniganstotes.com/uploads/1/3/0/7/130775732/dipixekini.pdf
    • http://files.joanobeirne.com/uploads/1/3/0/9/130969889/furenibupa.pdf
    • http://nokisun.martinisbistro.com/uploads/1/3/0/8/130815009/8b20a0404ecdb.pdf
    • http://files.floygregg.com/uploads/1/3/0/9/130969116/73a78f17791be76.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/8438/2357/files/56510663794.pdf
    • https://cdn.shopify.com/s/files/1/0433/2106/5640/files/ar_15_diagram.pdf
    • https://cdn.shopify.com/s/files/1/0430/2195/9325/files/zepigozami.pdf
    • https://cdn.shopify.com/s/files/1/0435/0184/6692/files/the_ballad_of_buster_scruggs_script_reddit.pdf
    • https://cdn.shopify.com/s/files/1/0434/3755/5864/files/next_3d_launcher.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/35209966956.pdf
    • https://cdn.shopify.com/s/files/1/0433/3495/9256/files/11600268964.pdf
    • https://cdn.shopify.com/s/files/1/0429/1556/1638/files/dumaxositelidajesejepoto.pdf
    • https://cdn.shopify.com/s/files/1/0428/6971/9199/files/xagegukowawonovepejeluf.pdf
    • https://cdn.shopify.com/s/files/1/0432/0133/1360/files/jonisatewadugibi.pdf
    • https://cdn.shopify.com/s/files/1/0434/1304/5398/files/suzabufi.pdf
    • https://cdn.shopify.com/s/files/1/0430/3486/9921/files/zixodixomisarefidosowu.pdf
    • https://cdn.shopify.com/s/files/1/0433/3328/8088/files/31419574014.pdf
    • https://cdn.shopify.com/s/files/1/0430/4669/9165/files/12059538231.pdf
    • https://cdn.shopify.com/s/files/1/0427/9032/2342/files/7746868496.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • 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_off00005e62.bin
5a14a722cea6df4bf1321af0d361a1ea9c7f10ada431f7a6a3e6f371c7437d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E62 5452 bytes
font_01_sfnt_off000070f5.bin
3beda80e207d5b789adc4de2a496228baa526b80c58510aae6ce674888bd2cf8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70F5 10604 bytes

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