Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f0a93cf80e0c253…

MALICIOUS

PDF

39.8 KB Created: 2020-08-25 13:50:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 893d848edaf64a240fbab6982b363128 SHA-1: 209e0a64a4adace2dc74e6e7e55205ad4384e782 SHA-256: 9f0a93cf80e0c2533ba9725d2eda9e11cdbe5810398d9316ebef29db5a4e02e7
128 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with one critical heuristic identifying a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL that matches the redirector link. The presence of a visual download button lure further supports a malicious intent to redirect the user to potentially harmful 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.cc/pify?keyword=postman+6.+7.+4
    • http://fokikuv.finalbitemosquito.com/uploads/1/3/1/4/131408103/e9a8d938.pdf
    • http://siveguxik.travel-homes.com/uploads/1/3/2/6/132682646/pijaloxev-dubiboru.pdf
    • https://cdn.shopify.com/s/files/1/0449/2728/7451/files/free_asvab_study_guide_2020.pdf
    • https://cdn.shopify.com/s/files/1/0444/3452/2279/files/canada_national_anthem_mp4_video_song.pdf
    • https://cdn.shopify.com/s/files/1/0430/6305/0394/files/sumepi.pdf
    • https://cdn.shopify.com/s/files/1/0434/7353/5138/files/pagegetip.pdf
    • https://cdn.shopify.com/s/files/1/0428/4655/2227/files/43982226385.pdf
    • https://cdn.shopify.com/s/files/1/0428/5336/7975/files/nuduz.pdf
    • https://cdn.shopify.com/s/files/1/0430/2422/0321/files/29556256255.pdf
    • https://cdn.shopify.com/s/files/1/0428/2885/7503/files/javuvobidanonodelam.pdf
    • https://cdn.shopify.com/s/files/1/0431/2032/8864/files/bhole_baba_ka_new_song.pdf
    • https://cdn.shopify.com/s/files/1/0430/1278/4277/files/38465888800.pdf
    • https://cdn.shopify.com/s/files/1/0432/4986/0765/files/cartilha_agricultura_biodinamica.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_off00005d2e.bin
de37728138811d5edbec599b77db0bf0371457dcc8fc5f772cb056c4d254c8ed		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D2E 5056 bytes
font_01_sfnt_off00006e5a.bin
2b42219744b7fb01eb84b9f12d61ecea203a38d77311b4984b2944f5a93cedf1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E5A 10676 bytes

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