Malicious PDF — malware analysis report

Static analysis result for SHA-256 ecd34f7c6e9f158b…

MALICIOUS

PDF

41.5 KB Created: 2020-08-21 01:59:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 919201558ed49ad201fdec1fed278491 SHA-1: 01ad118dd5b9b01fc89d565d36075ec4d58ce60d SHA-256: ecd34f7c6e9f158b6a6b6bdcb9026a093a20735a126f2e886fc513c8c91fd33e
128 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ttraff.cc, disguised with a seemingly benign filename related to childcare. The document body, though heavily obfuscated, contains the same lure text and URL. The presence of a link farm further indicates a malicious intent to distribute malicious content or engage in SEO abuse for traffic generation.

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=behaviour+guidance+plan+template+childcare
    • http://files.jinkymarsh.com/uploads/1/3/1/3/131380480/bilota_goras.pdf
    • https://cdn.shopify.com/s/files/1/0431/1541/3658/files/78920558448.pdf
    • https://cdn.shopify.com/s/files/1/0428/7663/3247/files/ielts_sample_practice_test.pdf
    • https://cdn.shopify.com/s/files/1/0429/2889/8211/files/curated_ringing_nail.pdf
    • https://cdn.shopify.com/s/files/1/0432/9635/8565/files/kabaddi_score_sheet_format.pdf
    • https://cdn.shopify.com/s/files/1/0434/3991/5175/files/biblia_de_estudio_apologetica_rvr_1960.pdf
    • https://cdn.shopify.com/s/files/1/0434/5207/2089/files/games_like_panda_pop.pdf
    • https://cdn.shopify.com/s/files/1/0430/6662/2106/files/bamuxemulotuge.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kuzizurogepibisomagin.pdf
    • https://cdn.shopify.com/s/files/1/0428/2299/2028/files/biggest_loser_weight_loss_calculator_spreadsheet.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_off0000660c.bin
eb5d238c6c9328b8f188a3b42b05a7ff0985ca56cab8d5dbec3ea86cc38a0b05		 pdf-font-stream PDF embedded font (sfnt) at offset 0x660C 5420 bytes
font_01_sfnt_off00007853.bin
d1ed899a978f2269da2cc6005ae8ac840b741dd4deeabe82592412b24a3b83da		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7853 9636 bytes

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