Malicious PDF — malware analysis report

Static analysis result for SHA-256 06cb4de0657895ef…

MALICIOUS

PDF

65.6 KB Created: 2020-08-21 09:44:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9fa1f709762c4db8624a557d786bd1da SHA-1: 3e114d36565b9669079a2b4170c63140476aaa65 SHA-256: 06cb4de0657895ef111048fe2873bfa676ed0beb52a71853475a7d8552929b1c
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded links, many pointing to Shopify domains, suggesting a link farm or SEO manipulation tactic. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is used to obscure the final destination. The document body, though heavily obfuscated, contains text related to search queries and the authoring application, reinforcing the idea of a lure. No scripts were extracted, but the presence of malicious redirector links and the link farm heuristic strongly indicate a malicious intent to redirect users to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=washroom+checklist+format+in+excel
    • http://files.lakewatchoutdoors.com/uploads/1/3/0/9/130969037/nirugelog.pdf
    • http://files.prooutboard.com/uploads/1/3/0/8/130873715/4035581.pdf
    • http://files.fittingroomligonier.com/uploads/1/3/0/8/130814672/sodumavasoso_sugenufefigu_tinivotosuna_sezomojodupebe.pdf
    • http://files.endoflifewisdom.org/uploads/1/3/0/7/130776644/wemelepogidefoji.pdf
    • http://duzanofu.casadegrode.com/uploads/1/3/0/7/130776783/linox.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0466/4095/5557/files/adani_ports_annual_report_2017-_18.pdf
    • https://cdn.shopify.com/s/files/1/0462/1287/4394/files/flowers_for_algernon_activities.pdf
    • https://cdn.shopify.com/s/files/1/0438/2598/7741/files/38686321137.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/79265304831.pdf
    • https://cdn.shopify.com/s/files/1/0433/4852/5206/files/12081968785.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/demesudixagivok.pdf
    • https://cdn.shopify.com/s/files/1/0431/0673/0144/files/93062999543.pdf
    • https://cdn.shopify.com/s/files/1/0439/3703/8491/files/waves_gizmo_answer_key.pdf
    • https://cdn.shopify.com/s/files/1/0432/7181/5331/files/how_to_make_sub_bookmark_in.pdf
    • https://cdn.shopify.com/s/files/1/0431/3304/2839/files/zosimigofolidiburu.pdf
    • https://cdn.shopify.com/s/files/1/0428/3518/1724/files/kwame_anthony_appiah_in_my_father_s_house.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b392.bin
a17885b4fd577e0298a64705d5055d2ac7c2363fd7008e9cf236b3df412a17d8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB392 2828 bytes
font_01_sfnt_off0000bd8c.bin
8d2269818af70726d031348bb0a11ebfe59fb903c5764c7b51a6e7bcc784e8c7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBD8C 5268 bytes
font_02_sfnt_off0000cf5a.bin
9001d013d6313d7456de8c27efc3f2d37d6ef04a35620d28c6dbc1e161073abd		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCF5A 12392 bytes

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