Malicious PDF — malware analysis report

Static analysis result for SHA-256 bade22f1fe5d82b0…

MALICIOUS

PDF

40.3 KB Created: 2020-08-14 01:03:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 831af57cc1148891521576234450718a SHA-1: 7ba451f5547f9b15b296c36568e84867819ca125 SHA-256: bade22f1fe5d82b0f1a7088165c7267e8828c94d9229bed9e540ca1aae92ef3d
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many pointing to Shopify-hosted PDFs, which is indicative of a link farm or SEO poisoning tactic. One critical heuristic firing identified a direct link to a known malicious redirector at `ttraff.com`. The document body, though heavily obfuscated, also contains this URL, suggesting the primary intent is to lure the user to this malicious site. No scripts were extracted from this sample.

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/wb?keyword=polyscience%20sous%20vide%20professional%20creative%20series%20manual
    • http://files.mychairspins.com/uploads/1/3/2/7/132740638/ea6ad10000f8e9.pdf
    • http://files.wjcreativestudios.com/uploads/1/3/1/4/131438282/kilix.pdf
    • http://files.fruitscompassion.com/uploads/1/3/0/7/130775978/2218745.pdf
    • http://files.bbawakeblogs.com/uploads/1/3/1/4/131437268/66807.pdf
    • http://files.transworldgeneralcommerce.com/uploads/1/3/0/7/130775563/a09954d.pdf
    • https://cdn.shopify.com/s/files/1/0436/5022/0185/files/xudelelefivesapukoxazavud.pdf
    • https://cdn.shopify.com/s/files/1/0430/6586/8437/files/31569212228.pdf
    • https://cdn.shopify.com/s/files/1/0428/6044/5855/files/levenoxixuforojaxewujaj.pdf
    • https://cdn.shopify.com/s/files/1/0434/5593/8725/files/72087960602.pdf
    • https://cdn.shopify.com/s/files/1/0432/6601/5400/files/giratipatetizozapule.pdf
    • https://cdn.shopify.com/s/files/1/0434/6878/3773/files/agnisakshi_malayalam_movie.pdf
    • https://cdn.shopify.com/s/files/1/0435/0876/0735/files/bestiario_juan_jose_arreola.pdf
    • https://cdn.shopify.com/s/files/1/0432/0083/9842/files/who_did_that_to_you_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0433/1739/5614/files/10688539000.pdf
    • https://cdn.shopify.com/s/files/1/0431/8799/4792/files/25509588789.pdf
    • https://cdn.shopify.com/s/files/1/0440/4579/5493/files/group_isomorphism_theorems.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_off00005f65.bin
3f7222c04a94cdc397545353f38c12d217f7b0aff264975ad95550640374c796		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F65 5464 bytes
font_01_sfnt_off000071e6.bin
88e2735d2bbbd0c4aef72284213d773263f3cf822d716a1e16f74ad9af4a6477		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71E6 10028 bytes

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