Malicious PDF — malware analysis report

Static analysis result for SHA-256 80625e83581e45e3…

MALICIOUS

PDF

117.0 KB Created: 2020-08-06 05:25:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 32fb09238f0686aee7ed1a6cfbdd43d3 SHA-1: 9d6e147e0da25917dde77670ec0eb7c934730d63 SHA-256: 80625e83581e45e3c57a37062f1e005a23a0e43b925b9358ecc6534e74d4634e
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, suggesting a link farm or SEO manipulation tactic. One prominent URL, https://ttraff.com/pify?keyword=catecismo+menor+arzobispado+de+lima+pdf, is flagged as a malicious redirector. This indicates the document's primary purpose is to redirect users to malicious infrastructure, likely for further exploitation or phishing. No scripts were extracted, but the presence of embedded URLs and the redirector link strongly suggest a 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.com/pify?keyword=catecismo+menor+arzobispado+de+lima+pdf
    • http://files.dougsgaragellc.com/uploads/1/3/1/3/131379540/ferolu.pdf
    • http://files.amyandcaitie.com/uploads/1/3/1/4/131454420/6866520.pdf
    • http://files.chathamhighlandsna.com/uploads/1/3/0/7/130738769/509478.pdf
    • http://files.coxevolab.org/uploads/1/3/1/4/131406082/gudukagod.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/4795/2292/files/depeleranejazaruvan.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/88065476392.pdf
    • https://cdn.shopify.com/s/files/1/0438/8945/9368/files/wefikepukezaterewodopama.pdf
    • https://cdn.shopify.com/s/files/1/0431/7403/5607/files/80763922902.pdf
    • https://cdn.shopify.com/s/files/1/0429/6422/2101/files/wedukukasawe.pdf
    • https://cdn.shopify.com/s/files/1/0429/2716/1507/files/25930030795.pdf
    • https://cdn.shopify.com/s/files/1/0439/1682/0648/files/27317640810.pdf
    • https://cdn.shopify.com/s/files/1/0433/7165/9414/files/34217622117.pdf
    • https://cdn.shopify.com/s/files/1/0430/1396/3929/files/enlace_quimico_ionico_y_covalente.pdf
    • https://cdn.shopify.com/s/files/1/0438/7900/6376/files/rodirufovo.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_off000184a3.bin
bbd57f0ff0a350c87f71d929f2eb4f98830b4195234ea4ec27c66343443e3ecd
pdf-font-stream PDF embedded font (sfnt) at offset 0x184A3 5396 bytes
font_01_sfnt_off000196dc.bin
10bd36d8f27a699172fa5074bde7c591936951f6d9a783c91b172bcf181b03d9
pdf-font-stream PDF embedded font (sfnt) at offset 0x196DC 15408 bytes