Malicious PDF — malware analysis report

Static analysis result for SHA-256 07b17c2929dc5882…

MALICIOUS

PDF

44.4 KB Created: 2020-08-09 11:50:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 877c20f8113f2a010e0c5f29562b731b SHA-1: 2837672d48209ba3b3afd98ae1f49b89a1183838 SHA-256: 07b17c2929dc58821a89f136b40093002ccf5e16e9bd56db04270351eedc1496
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which point to external resources, indicating a link farm or redirection attempt. The primary URL, https://ttraff.com/pify?keyword=encyclop%25C3%25A9die+des+plantes+m%25C3%25A9dicinales+larousse+pdf, is flagged as a malicious redirector. This suggests the document is designed to lure users to malicious sites, likely for phishing or to download further malware.

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=encyclop%25C3%25A9die+des+plantes+m%25C3%25A9dicinales+larousse+pdf
    • http://files.frompapagod.com/uploads/1/3/1/6/131607522/383da91f2.pdf
    • http://files.actuatores.com/uploads/1/3/0/7/130740049/6631061.pdf
    • http://files.edsworldwide.org/uploads/1/3/2/7/132740320/sotilemiz-gukixedesimujar-bevulas-lativeponeji.pdf
    • http://jebol.thecelestecollection.com/uploads/1/3/2/6/132681352/vadet_tulefadizew.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/8028/6372/files/80568031831.pdf
    • https://cdn.shopify.com/s/files/1/0431/4539/6386/files/67279856082.pdf
    • https://cdn.shopify.com/s/files/1/0435/1311/8872/files/google_fi_codes.pdf
    • https://cdn.shopify.com/s/files/1/0429/9322/1783/files/gidutawidobepofaz.pdf
    • https://cdn.shopify.com/s/files/1/0431/0820/4704/files/54351177048.pdf
    • https://cdn.shopify.com/s/files/1/0432/4796/0232/files/xanefofiman.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/12509012650.pdf
    • https://cdn.shopify.com/s/files/1/0439/3605/5454/files/gavufililenunete.pdf
    • https://cdn.shopify.com/s/files/1/0431/1888/7073/files/74642436992.pdf
    • https://cdn.shopify.com/s/files/1/0433/1231/6584/files/zeximekobotizatigi.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_off000063e3.bin
62e57b6468b3a0a4ccccfc5aa90aa75f4eeaf27bfd60b9d0d21e2c51b7c397e8
pdf-font-stream PDF embedded font (sfnt) at offset 0x63E3 5500 bytes
font_01_sfnt_off0000764c.bin
70dee0c945ebeb86779890625ace1cc59f87e987cb84a26edf7f82716adf9f30
pdf-font-stream PDF embedded font (sfnt) at offset 0x764C 14980 bytes