Malicious PDF — malware analysis report

Static analysis result for SHA-256 1bc9bbc312e12486…

MALICIOUS

PDF

43.9 KB Created: 2020-08-18 19:02:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 44271cd0c17206427429331f11000d72 SHA-1: 030b063e8f3de1738c9d51960b1c094381c33d3b SHA-256: 1bc9bbc312e12486d6dc7340b452fecc3ae0e528d527830dcbd990739e02a4e3
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a mass external link farm, with one critical link pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=design+technology+specification+template' which is likely intended to lure the user into downloading a malicious file. The presence of a 'download button' heuristic further supports this phishing lure.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=design+technology+specification+template
    • http://files.winningtimefarm.com/uploads/1/3/0/7/130776536/lolanunev_mupiwuzajafaro_fiwagif_gofamo.pdf
    • http://files.zylberschtein.com/uploads/1/3/1/4/131409909/4500720.pdf
    • http://detesubuj.meridenbusinessreview.com/uploads/1/3/1/0/131070420/f554db227.pdf
    • http://files.janeemilyblack.com/uploads/1/3/1/4/131407571/8d4f0dda0.pdf
    • http://monepo.saltlakeconference.com/uploads/1/3/2/6/132683003/ramuzexaxiva.pdf
    • https://cdn.shopify.com/s/files/1/0434/8097/3477/files/gojoxosuk.pdf
    • https://cdn.shopify.com/s/files/1/0428/3187/2166/files/komop.pdf
    • https://cdn.shopify.com/s/files/1/0429/6579/4969/files/darolibakudisesolu.pdf
    • https://cdn.shopify.com/s/files/1/0433/5638/9528/files/gikarorafujobo.pdf
    • https://cdn.shopify.com/s/files/1/0433/7877/0076/files/64696532810.pdf
    • https://cdn.shopify.com/s/files/1/0434/8978/8069/files/japogenerujutu.pdf
    • https://cdn.shopify.com/s/files/1/0430/0885/2117/files/21583526193.pdf
    • https://cdn.shopify.com/s/files/1/0431/6073/1799/files/85090318252.pdf
    • https://cdn.shopify.com/s/files/1/0431/5188/4445/files/zobugitabitatoduru.pdf
    • https://cdn.shopify.com/s/files/1/0434/4627/2162/files/ti_83_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/1931/3053/files/tezajosivarugivipuralep.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_off00005f48.bin
2076f56964c9d53113a869e2ed274a20931437dc2aa05b41b877afa845902290
pdf-font-stream PDF embedded font (sfnt) at offset 0x5F48 5436 bytes
font_01_sfnt_off000071ae.bin
695c0bfda1ea1c9de96eed47ca7da50fadd1c4a4f03747341fafaa23cfaeaf3d
pdf-font-stream PDF embedded font (sfnt) at offset 0x71AE 15876 bytes