Malicious PDF — malware analysis report

Static analysis result for SHA-256 8758a0c65b8cf943…

MALICIOUS

PDF

42.0 KB Created: 2020-08-23 01:50:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5ea3fa11946285a2d4cdd15e750311d3 SHA-1: 3780854f0f1e3f8259271325ee42513e22276a48 SHA-256: 8758a0c65b8cf943257faad756dfb5611652275ce9c4dab754ee699c4a055d41
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.com/pify?keyword=audible+audiobooks+to+iphone'. This indicates a phishing or scam attempt, leveraging a lure related to Audible audiobooks. The document also contains a large number of embedded links, many pointing to Shopify domains, which is flagged as a link farm. 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/pify?keyword=audible+audiobooks+to+iphone
    • http://files.cdl-canberra-ec.com/uploads/1/3/1/4/131406843/pukurajagefapu_xamuwos_togomisojor.pdf
    • http://files.inspire-montessori.com/uploads/1/3/1/4/131454620/genusegexeta_xokosizufepu.pdf
    • http://files.pocketwinemaker.com/uploads/1/3/2/6/132682338/kelosofatofemitakoji.pdf
    • http://borumap.viana-motion.com/uploads/1/3/2/6/132683138/livupurikub.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/26443777516.pdf
    • https://cdn.shopify.com/s/files/1/0432/6644/1376/files/2014_nissan_sentra_owners_manual.pdf
    • https://cdn.shopify.com/s/files/1/0428/8803/6505/files/891133827.pdf
    • https://cdn.shopify.com/s/files/1/0435/6282/7935/files/tefexikasixewasaxenejal.pdf
    • https://cdn.shopify.com/s/files/1/0431/2072/2080/files/matimipufazivevadotuz.pdf
    • https://cdn.shopify.com/s/files/1/0428/9599/9129/files/quadratic_equation_exercises_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0438/3319/6706/files/76586038517.pdf
    • https://cdn.shopify.com/s/files/1/0429/4452/8550/files/thermal_physics_kittel_2nd_edition.pdf
    • https://cdn.shopify.com/s/files/1/0430/4257/0402/files/46105818980.pdf
    • https://cdn.shopify.com/s/files/1/0433/5301/4423/files/56724522052.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_off000066f1.bin
f7e8c3913aee447c1910808630972705467b89d0314a03566e02c7eef1c2060a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66F1 5144 bytes
font_01_sfnt_off00007860.bin
67e31912d30338a870af3e950185d1ca7e542ff65ccb2e3c30f61d9159fab1ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7860 10260 bytes

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