Malicious PDF — malware analysis report

Static analysis result for SHA-256 0371f562ffb3a27c…

MALICIOUS

PDF

41.6 KB Created: 2020-08-05 01:35:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b0767e33c67ec8457195b0ca31040110 SHA-1: f8f4f99c80e51de191b5378dce246c6e6d65b287 SHA-256: 0371f562ffb3a27cd1312ab9139991993ca20add6c5ec819b83e00b2a0c6c918
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of external links, many pointing to what appears to be a link farm designed to host PDF files. One of the primary links, https://ttraff.cc/pify?keyword=ana+catalina+emmerick+visiones+y+revelaciones+completas+pdf, is flagged as a malicious redirector. This suggests the document's purpose is to lure users to malicious infrastructure, likely for further exploitation or phishing.

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=ana+catalina+emmerick+visiones+y+revelaciones+completas+pdf
    • http://files.elaborateevents.ca/uploads/1/3/1/3/131380107/7787991.pdf
    • http://gifik.bodyraiders.com/uploads/1/3/1/8/131856257/b478b6e90da9b.pdf
    • http://wijigeji.gpsafety.net/uploads/1/3/2/7/132740836/koxepurig_morujepux_xisajimekena.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0437/0841/6165/files/78841590787.pdf
    • https://cdn.shopify.com/s/files/1/0432/8023/6702/files/langman_s_medical_embryology_12th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0430/3526/3138/files/gebamozatemotevap.pdf
    • https://cdn.shopify.com/s/files/1/0428/4170/2567/files/5228285713.pdf
    • https://cdn.shopify.com/s/files/1/0428/0595/2671/files/mfc-_l2700dw_driver.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/siwizobudavegi.pdf
    • https://cdn.shopify.com/s/files/1/0429/5832/3865/files/xotagivinufunageri.pdf
    • https://cdn.shopify.com/s/files/1/0430/3863/8241/files/15681799841.pdf
    • https://cdn.shopify.com/s/files/1/0430/3477/1607/files/zepoxovebupuxinalasuwe.pdf
    • https://cdn.shopify.com/s/files/1/0434/0023/3112/files/95591773464.pdf
    • https://cdn.shopify.com/s/files/1/0434/8936/2082/files/zipupivunuxenokisinu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/32377204601.pdf
    • https://cdn.shopify.com/s/files/1/0439/4654/1211/files/mapepipuwivujomitus.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_off00005927.bin
83e4b31ae4b3553c611b7c98a2fc6b9a68a1b756f0831943fad6a36b5703162e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5927 5516 bytes
font_01_sfnt_off00006be4.bin
94fa4219d6ef5621ba3038b06e54febf3a54fe8030d6123101567ce16d4119f2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BE4 14860 bytes

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