Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e84c27b40259cd1…

MALICIOUS

PDF

44.4 KB Created: 2020-09-01 09:25:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 8ba3db2991ccd08e09f369bfcd52c25a SHA-1: ddfb4effad5de1de568ed0737fb780a7e30e5aef SHA-256: 7e84c27b40259cd1c5832d59b37a99254d2ced34ca38e714f9d97e321403ab0c
154 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a malicious domain, likely as part of a phishing or scam campaign. The document body, though heavily obfuscated, contains text suggesting a lure related to "Bahubali 2 lyrics video song" and the malicious URL. The presence of numerous external PDF links, many pointing to benign content, suggests a link farm or SEO manipulation tactic to obscure the malicious redirector.

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.com/pify?keyword=bahubali+2+lyrics+video+song In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://static.usrfiles.com/ugd/4479ed_7251df3019dd4a3186b6ed14c6f5d6ce.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_c156cb0b3be843ce97a3e570bb728c2c.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/76b6de_4f3853a1f03940bdbd8a11284a80613c.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/eb6612_c7c685a8d2024b12af205eec8e09eff1.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b65acf_dbb9825d8d50487c846eb9a924492f1f.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/d5415a_226510287e99419fa9354eaae48530e6.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/0a51c1_6c23d4dc0659488d9729c822385ddea0.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/fa6f14_b40f7556b09145798a4518e589c04a9f.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/9ff9b8_e230f5cdd1824d48ae7bb7daeecb15dc.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/7198c1_820651ac7e8b468a8bd6ba60a72e6fde.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/f103bb_9744baa2c51d40daab77ba6dd2d6eaaf.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/278743_c386381fbeeb41ecad6880af573e24b8.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004b26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4B26 5488 bytes
SHA-256: b14809da11f7516199603e21744cc4077215c27e9d4b388728cf133be64e7996
font_01_sfnt_off00005db8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DB8 2576 bytes
SHA-256: 87a2043b89c9a07063531d2139a53fadb97926196d7ac7c0d52e7c98e116c0e1
font_02_sfnt_off000068c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68C7 14164 bytes
SHA-256: 794df9845bcd883f25722d62a1055706a9de9e005ac48ff1a42a330ef8e18394
font_03_sfnt_off00009457.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9457 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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