Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c408b65e7539263…

MALICIOUS

PDF

58.6 KB Created: 2020-08-20 05:32:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 81a27d39aebc79faa5f2ffac14fc5889 SHA-1: 334adbb299d3422d9f1b42e044998335a928c3c7 SHA-256: 1c408b65e7539263b16a942292e20f9731b230cd894843d820ed2578dfd73330
128 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'Outlook automatically pictures gpo' and a call-to-action phrase, suggesting a lure to trick the user into clicking the malicious link. The presence of a link farm further indicates an attempt to manipulate search engine results or distribute malicious content.

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=outlook+automatically++pictures+gpo
    • http://files.sharptravelplanners.com/uploads/1/3/1/4/131407761/pukovakabaz.pdf
    • http://zinupud.ackertech.org/uploads/1/3/1/4/131406947/lukagokubokix-kotud-xubasefiteruz.pdf
    • http://xupuxad.landlandland.com/uploads/1/3/0/7/130775126/tetikowo.pdf
    • http://files.lynous.com/uploads/1/3/0/8/130814258/9912537.pdf
    • http://beposilet.en.revesalpins.com/uploads/1/3/1/8/131856666/8789052.pdf
    • https://cdn.shopify.com/s/files/1/0434/2205/6600/files/gomujez.pdf
    • https://cdn.shopify.com/s/files/1/0438/4063/5042/files/magic_item_compendium_3._5e_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/6314/8706/files/xivijabimejurenu.pdf
    • https://cdn.shopify.com/s/files/1/0429/7087/4009/files/rejepulit.pdf
    • https://cdn.shopify.com/s/files/1/0431/7400/2837/files/63716925120.pdf
    • https://cdn.shopify.com/s/files/1/0434/3093/6733/files/kinatudune.pdf
    • https://cdn.shopify.com/s/files/1/0430/0842/6147/files/tuwogonobosutimamo.pdf
    • https://cdn.shopify.com/s/files/1/0451/4103/3114/files/losuwujijukawapebubadebu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mitev.pdf
    • https://cdn.shopify.com/s/files/1/0435/9972/4702/files/rurugamox.pdf
    • https://cdn.shopify.com/s/files/1/0434/1566/6840/files/sutanagexigus.pdf
    • https://cdn.shopify.com/s/files/1/0439/3756/2779/files/how_to_find_my_google_id.pdf
    • https://cdn.shopify.com/s/files/1/0431/8180/1629/files/brunner_and_suddarth_3rd_edition.pdf
    • https://cdn.shopify.com/s/files/1/0435/5011/3943/files/affirming_diversity_nieto.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_off00008fc5.bin
b5b4b3ca8bde8d0ba1811e2ed03e0e697a243c899d84e9f156ca6941c0a8080e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8FC5 5448 bytes
font_01_sfnt_off0000a246.bin
e0f047f5013808a385acabd05e169e31657e2741d975d5fb706d86038d9717c7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA246 10472 bytes
font_02_sfnt_off0000c64c.bin
03928253ee2cb1fef248e02a9a6434000674c6c2dfc7f61f5290e699cd36adc1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC64C 16088 bytes

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