Malicious PDF — malware analysis report

Static analysis result for SHA-256 fba2f5111d87d800…

MALICIOUS

PDF

35.2 KB Created: 2020-08-11 20:50:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3760d455a1a42c3bbf76cf6d78b17aea SHA-1: fa99dadcaaadc576fc590abe4dd32702cc08afdf SHA-256: fba2f5111d87d800fcf438fa06c3a151719f06174d5294eecc656d1609042ce1
152 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The document body, though partially corrupted, contains text related to 'Agenda 2020 em pdf' and includes the malicious URL https://ttraff.cc/pify?keyword=agenda+2020+em+pdf. This suggests the document is designed to trick users into clicking malicious links, 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.cc/pify?keyword=agenda+2020+em+pdf
    • http://files.fatcasolution.com/uploads/1/3/2/6/132695384/0e07ed6cfc.pdf
    • http://files.svgreatschools.org/uploads/1/3/1/8/131856666/3374797.pdf
    • http://nuganuxu.southerncharitychallenge.com/uploads/1/3/0/9/130969723/bb8de8.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xigorekotat.pdf
    • https://cdn.shopify.com/s/files/1/0432/9301/6222/files/wutupipodefafuv.pdf
    • https://cdn.shopify.com/s/files/1/0431/8940/3810/files/79759349499.pdf
    • https://cdn.shopify.com/s/files/1/0430/3169/1421/files/78200982072.pdf
    • https://cdn.shopify.com/s/files/1/0432/6631/0299/files/of306_declaration_for_federal_employment.pdf
    • https://cdn.shopify.com/s/files/1/0433/6982/4407/files/40428330468.pdf
    • https://cdn.shopify.com/s/files/1/0428/8082/7558/files/sedimagufuduwek.pdf
    • https://cdn.shopify.com/s/files/1/0432/6385/2712/files/30660010121.pdf
    • https://cdn.shopify.com/s/files/1/0428/3308/4575/files/vuriwigezadovokejoreba.pdf
    • https://cdn.shopify.com/s/files/1/0433/0595/9574/files/97869166530.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_off00004698.bin
d121875c1d5063bc4f154762860be58e5035d06b68082b5c90a28cfabf5c29f0
pdf-font-stream PDF embedded font (sfnt) at offset 0x4698 5320 bytes
font_01_sfnt_off000058a3.bin
e4d111611b2738d8db53e5738fee6da4cf35893a626e1c6ff419b3a338b43ae0
pdf-font-stream PDF embedded font (sfnt) at offset 0x58A3 12728 bytes