Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab6d05c2ab75b9bd…

MALICIOUS

PDF

44.7 KB Created: 2020-08-23 20:23:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 67b463317bfe040db0ccee6551f3e9c3 SHA-1: 200f626be9611733cd2f17bc94228a0a51bd1f81 SHA-256: ab6d05c2ab75b9bdf8a3cceeea9b6302f4289cd53db8e1f0b38213c64863fb66
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic identifying a link to a known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text referencing 'basic excel spreadsheet tutorial' and includes the malicious URL. This suggests a social engineering lure to redirect the user to malicious content.

Heuristics 3

  • 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.
  • 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=basic+excel+spreadsheet+tutorial
    • http://gapoto.redwood4h.org/uploads/1/3/0/9/130969525/nanuva_xofol_zurobuxelupete_jodidabitito.pdf
    • http://files.hoothootpost.com/uploads/1/3/2/6/132682282/5709165.pdf
    • https://cdn.shopify.com/s/files/1/0431/2091/8679/files/72075688781.pdf
    • https://cdn.shopify.com/s/files/1/0435/4634/5640/files/nofotanamulitifosarokasit.pdf
    • https://cdn.shopify.com/s/files/1/0432/3010/1668/files/70658323677.pdf
    • https://cdn.shopify.com/s/files/1/0434/1478/2104/files/metirifiwike.pdf
    • https://cdn.shopify.com/s/files/1/0439/0954/6136/files/best_bodybuilding_app_android_free.pdf
    • https://cdn.shopify.com/s/files/1/0430/4211/1650/files/62679902982.pdf
    • https://cdn.shopify.com/s/files/1/0433/9974/1596/files/vokokulisiler.pdf
    • https://cdn.shopify.com/s/files/1/0433/0127/3758/files/99522261102.pdf
    • https://cdn.shopify.com/s/files/1/0428/7689/5388/files/fitexigovulosojegisinow.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_off0000632f.bin
76207a4992cf5a14debee4a9ac5d0ab292f552a17d1b76b1499f842b871986a4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x632F 5052 bytes
font_01_sfnt_off0000746e.bin
5a2a4e3629d7de0a590090bef5cb0dbe0a38d430592ef96fe80efe67cdc7ba73		 pdf-font-stream PDF embedded font (sfnt) at offset 0x746E 10452 bytes
font_02_sfnt_off0000981a.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x981A 4324 bytes

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