Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f3a6c8f1e601452…

MALICIOUS

PDF

40.3 KB Created: 2020-08-11 08:41:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ae7a1495bc083e48fc19787ec66c53f9 SHA-1: 2dfa8e4830b24e48f4000c41d91eb0fe026595ed SHA-256: 7f3a6c8f1e601452d9e43079e9fa546650630d97425a593c175c537f22be936e
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=berlitz+essential+spanish+pdf', suggesting a lure to a malicious site. The presence of a large number of external PDF links further indicates a link farm or SEO manipulation tactic, likely to obscure the malicious intent.

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/pify?keyword=berlitz+essential+spanish+pdf
    • http://files.drbrentschillinger.com/uploads/1/3/1/4/131438055/wafesojidadita-juminube-pevolikavox.pdf
    • http://files.grammazooexotics.com/uploads/1/3/1/4/131407148/mizaxom.pdf
    • http://pivuf.vikkilutton.com/uploads/1/3/0/9/130969742/ae46361b2e56.pdf
    • http://tegevili.gmcchealthyhealinghemp.com/uploads/1/3/0/8/130814017/8810137b6b3b.pdf
    • http://files.envisiononeness.com/uploads/1/3/1/0/131070561/1388295.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/1184/9890/files/40328301517.pdf
    • https://cdn.shopify.com/s/files/1/0430/1992/7713/files/benedict_de_spinoza_ethics.pdf
    • https://cdn.shopify.com/s/files/1/0432/0490/3073/files/42151794716.pdf
    • https://cdn.shopify.com/s/files/1/0431/5214/6587/files/start_in_antreprenoriat.pdf
    • https://cdn.shopify.com/s/files/1/0448/4985/6669/files/curso_de_ingles_basico_gratis_para_principiantes.pdf
    • https://cdn.shopify.com/s/files/1/0440/4294/4677/files/cara_membuat_surat_lamaran_kerja.pdf
    • https://cdn.shopify.com/s/files/1/0436/9688/1814/files/makuwog.pdf
    • https://cdn.shopify.com/s/files/1/0439/6960/9886/files/residual_functional_capacity_forms.pdf
    • https://cdn.shopify.com/s/files/1/0437/8276/6750/files/artikel_akuntansi_syariah.pdf
    • https://cdn.shopify.com/s/files/1/0432/1984/5277/files/rebirth_quaintly_rot.pdf
    • https://cdn.shopify.com/s/files/1/0429/5294/9913/files/jakipegowowivodalepivutu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xuwuvedalolavotidexetugom.pdf
    • https://cdn.shopify.com/s/files/1/0430/6151/0293/files/xiwuzagakor.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_off00005e26.bin
8df61e63554b253bb38bae2fecd8b155ec23a21e56ac76eaa7ba8185eb92db29		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E26 5228 bytes
font_01_sfnt_off00006ff0.bin
3930f4be58fbe2da0ce2328502b5f95663d8a3768bf04bde579455233aa1cb68		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FF0 10532 bytes

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