Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9512906a84f548e…

MALICIOUS

PDF

45.3 KB Created: 2020-08-13 21:58:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 03af632b526f6196a1ba75b2d6b903b0 SHA-1: 6febd0cd44e106a7308b921751f32586264bd5bc SHA-256: c9512906a84f548e7cbbfe578c5df1f359a06c22f7a6fb83863e75fa1b08677e
128 Risk Score

Malware Insights

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

The PDF file contains a significant number of external links, characteristic of a link farm, with one link pointing to known malicious redirector infrastructure. The presence of a call-to-action phrase further suggests a deceptive intent. The primary malicious IOC is the redirector URL, which likely leads to a further stage of the attack.

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.ru/pify?keyword=fgdp+guidelines+radiography
    • http://files.heathernlettow.com/uploads/1/3/2/6/132695830/3091693.pdf
    • http://files.bethinkcreate.com/uploads/1/3/2/7/132740218/70bd1ff781.pdf
    • http://files.ianburtphotography.co.uk/uploads/1/3/1/3/131380063/jetaga_bowenumogidap_ziwamokovujoduf_nuvotese.pdf
    • http://files.yvonneblack.com/uploads/1/3/1/6/131636746/gebimuwuxogi-vimuli-sadutesuvib.pdf
    • https://cdn.shopify.com/s/files/1/0432/8561/0654/files/jowitopejopotaju.pdf
    • https://cdn.shopify.com/s/files/1/0435/5362/0136/files/gurps_bestiary.pdf
    • https://cdn.shopify.com/s/files/1/0429/7680/5018/files/jumikujotenorolorazo.pdf
    • https://cdn.shopify.com/s/files/1/0428/6208/4262/files/17713435179.pdf
    • https://cdn.shopify.com/s/files/1/0431/2173/7882/files/folow.pdf
    • https://cdn.shopify.com/s/files/1/0429/9682/6261/files/38823869630.pdf
    • https://cdn.shopify.com/s/files/1/0440/4438/6454/files/liminoxofuro.pdf
    • https://cdn.shopify.com/s/files/1/0436/3878/4158/files/raxaxeb.pdf
    • https://cdn.shopify.com/s/files/1/0433/5930/5880/files/periodicity_notes.pdf
    • https://cdn.shopify.com/s/files/1/0432/8760/9497/files/moral_immoral_amoral_osho.pdf
    • https://cdn.shopify.com/s/files/1/0433/8250/5628/files/scala-_continuations-_plugin_2._11._1.pdf
    • https://cdn.shopify.com/s/files/1/0433/0350/1989/files/instrumentacion_y_control_de_procesos_juan_carlos_maraa.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006152.bin
204bbd7260adf7821fd8dd41cdc1ca121a744432d9a86f9688e4471b34300a0a
pdf-font-stream PDF embedded font (sfnt) at offset 0x6152 5080 bytes
font_01_sfnt_off00007289.bin
792dd257316360b7de01cb9c99a5f58e9850942da4adb0658581ec8a0e9a7e76
pdf-font-stream PDF embedded font (sfnt) at offset 0x7289 11132 bytes
font_02_sfnt_off0000986f.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f
pdf-font-stream PDF embedded font (sfnt) at offset 0x986F 4324 bytes