Malicious PDF — malware analysis report

Static analysis result for SHA-256 714ab6ff13160ef4…

MALICIOUS

PDF

50.3 KB Created: 2020-08-18 21:01:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a7d4cfbd8b11f5a46b67beb89561bbf6 SHA-1: 55d617edae0289ed54c7b84b850fce90d16f12a8 SHA-256: 714ab6ff13160ef45b392051660ab66492711111d51ad21c34185cbd30e028b8
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, with one identified as a malicious redirector. The document body, though garbled, contains the URL 'https://ttraff.com/pify?keyword=bd+baul+song', indicating an attempt to lead the user to malicious infrastructure. The presence of numerous PDF links suggests a link farm or a coordinated phishing effort.

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=bd+baul+song
    • http://files.pugsleydigitalmarketing.com/uploads/1/3/2/6/132695651/xukuserowireda_jaxojezinere_lirewori_fanupagimejoxa.pdf
    • http://files.prairiefootprints.com/uploads/1/3/1/0/131070469/fakugibokiwuba.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wajafaliwufenosikem.pdf
    • https://cdn.shopify.com/s/files/1/0431/1321/8199/files/fipuzejoleroxolalux.pdf
    • https://cdn.shopify.com/s/files/1/0439/2629/0587/files/harlots_hulu_parents_guide.pdf
    • https://cdn.shopify.com/s/files/1/0428/6083/9079/files/dakirumazuki.pdf
    • https://cdn.shopify.com/s/files/1/0437/0438/5690/files/nulozitasopidiwoded.pdf
    • https://cdn.shopify.com/s/files/1/0429/3374/7878/files/62554706697.pdf
    • https://cdn.shopify.com/s/files/1/0432/2417/0664/files/6259787316.pdf
    • https://cdn.shopify.com/s/files/1/0444/5500/2279/files/alternative_dispute_resolution_book.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
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNU
    • http://www.gnu.org/copyleft/gpl.htmRegular

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000716e.bin
2190719a61ff9a4ec211da60e0f378308d52bc138630811f36f2746672c5a2e7
pdf-font-stream PDF embedded font (sfnt) at offset 0x716E 5088 bytes
font_01_sfnt_off000082c5.bin
b74873899fd5ffa3d52f856bd1518937d642ce0993011ec78a0cd54dbbca5b3d
pdf-font-stream PDF embedded font (sfnt) at offset 0x82C5 7196 bytes
font_02_sfnt_off000099e7.bin
c12342ae826388ed5905672f9087857546b4202888f0db8a16c3e504e6c66807
pdf-font-stream PDF embedded font (sfnt) at offset 0x99E7 10412 bytes