Malicious PDF — malware analysis report

Static analysis result for SHA-256 c02bc0361e38e487…

MALICIOUS

PDF

36.9 KB Created: 2020-08-04 13:10:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4ab59656aa03579f42e82a4dbd5d3e91 SHA-1: f7984ca48e0e015d23cc8ff9cb096ba0502d88c3 SHA-256: c02bc0361e38e487df71ddc7edda64237f9821c2a82ffa18f816c8d4b9f8c638
120 Risk Score

Malware Insights

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

The PDF document was identified as malicious due to the presence of a link farm containing numerous external PDF links. One of these links, https://ttraff.com/pify?keyword=anormalidad+y+normalidad+pdf, points to a known malicious redirector, indicating a potential phishing or malware distribution attempt. The document body contains garbled text and metadata suggesting it was generated by wkhtmltopdf.

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=anormalidad+y+normalidad+pdf
    • http://files.jasmineye.com/uploads/1/3/1/1/131163643/6148220.pdf
    • http://files.fermentedteacompany.com/uploads/1/3/2/8/132815960/9032386.pdf
    • http://files.jenniferdomalstudios.com/uploads/1/3/0/8/130813447/biwomefoxokakifar.pdf
    • https://cdn.shopify.com/s/files/1/0431/7046/3912/files/i_love_you_ukulele_chords.pdf
    • https://cdn.shopify.com/s/files/1/0434/2549/7250/files/85264963491.pdf
    • https://cdn.shopify.com/s/files/1/0436/0175/6323/files/midnight_in_harlem_chords.pdf
    • https://cdn.shopify.com/s/files/1/0433/3197/7370/files/binavupuver.pdf
    • https://cdn.shopify.com/s/files/1/0433/5697/9351/files/33835263337.pdf
    • https://cdn.shopify.com/s/files/1/0435/1007/1460/files/ds-_vertical-_align.pdf
    • https://cdn.shopify.com/s/files/1/0437/8601/0776/files/vancouver_time_zone.pdf
    • https://cdn.shopify.com/s/files/1/0434/1478/2103/files/buzaveripogav.pdf
    • https://cdn.shopify.com/s/files/1/0427/6148/6503/files/gigufaxudanebugipug.pdf
    • https://cdn.shopify.com/s/files/1/0434/0131/4454/files/wovilevinufejunude.pdf
    • https://cdn.shopify.com/s/files/1/0428/3262/5831/files/patch_6._6_league_of_legends.pdf
    • https://cdn.shopify.com/s/files/1/0433/5442/3464/files/86266222424.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_off0000524f.bin
3002819c7663d6b44db038cce151c3f3a8431e3e5caf2872ed49b6fc77403bf0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x524F 5100 bytes
font_01_sfnt_off0000639a.bin
8f3bceb6224a504fa7f2240d7cf3281d8bc69ee6e74780c3c701b3de6b196f84		 pdf-font-stream PDF embedded font (sfnt) at offset 0x639A 10536 bytes

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