Malicious PDF — malware analysis report

Static analysis result for SHA-256 30d5f477be71efc6…

MALICIOUS

PDF

38.6 KB Created: 2020-08-09 23:30:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ecd13b342d276d33c4ecf45c698a9f4b SHA-1: 9f099f04aba1c25165cc11c31158903f670682b9 SHA-256: 30d5f477be71efc68752d5096ca1d4ebe56eab421309e3ce8b1e117ae9957d1c
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com. One of the primary links, https://ttraff.cc/pify?keyword=atto+di+dolore+testo+pdf, is identified as a malicious redirector. This suggests the document's purpose is to lure users to malicious sites through a deceptive link farm, likely for further exploitation or phishing. No scripts were extracted, and the document body contained mostly binary data and URLs.

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=atto+di+dolore+testo+pdf
    • http://files.swswa.org/uploads/1/3/1/3/131383329/wewokotozid.pdf
    • http://files.unionchapelmonroe.com/uploads/1/3/1/6/131607053/ad2c4f603709f4.pdf
    • http://files.lldrq.com/uploads/1/3/2/6/132683330/6c89f45f2d.pdf
    • https://cdn.shopify.com/s/files/1/0428/7198/0198/files/visio_to_converter_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/5530/0249/files/zizava.pdf
    • https://cdn.shopify.com/s/files/1/0434/0380/4839/files/nerolekuzamixepurekasawur.pdf
    • https://cdn.shopify.com/s/files/1/0432/2666/1023/files/duxemajari.pdf
    • https://cdn.shopify.com/s/files/1/0431/8330/8955/files/toferofi.pdf
    • https://cdn.shopify.com/s/files/1/0432/2190/9659/files/jorezituto.pdf
    • https://cdn.shopify.com/s/files/1/0432/5074/5512/files/wheater_s_pathology_atlas.pdf
    • https://cdn.shopify.com/s/files/1/0434/3031/4151/files/jimolak.pdf
    • https://cdn.shopify.com/s/files/1/0434/2412/0997/files/4660821249.pdf
    • https://cdn.shopify.com/s/files/1/0433/1080/9256/files/46039868725.pdf
    • https://cdn.shopify.com/s/files/1/0430/7084/9181/files/lilomite.pdf
    • https://cdn.shopify.com/s/files/1/0436/2688/9374/files/96787126856.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000582c.bin
67d1e91237148bad67f5f9ef8a4c87d2245158a0fc3add63ac88194d13dbedc2
pdf-font-stream PDF embedded font (sfnt) at offset 0x582C 4816 bytes
font_01_sfnt_off0000689d.bin
1b0cb81ee592fbd64802afd4cfdc0fc28647b4292d8a159284d9d02a4e2f899d
pdf-font-stream PDF embedded font (sfnt) at offset 0x689D 11012 bytes