Malicious PDF — malware analysis report

Static analysis result for SHA-256 118d2beedce05af3…

MALICIOUS

PDF

41.1 KB Created: 2020-08-02 04:54:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0541b245aac8b5b6327df35c1301be54 SHA-1: 5794516fc38a1081736d0c70337850f59eb2813d SHA-256: 118d2beedce05af3966ae8f73a3c152d2e2fc4f7361a5e6b44ba336efb6813e3
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document was flagged as malicious by an ML classifier and contains a critical heuristic indicating it links to known malicious redirector infrastructure. It also exhibits characteristics of a PDF link farm, embedding numerous external PDF links, with the primary malicious URL being https://ttraff.cc/pify?keyword=wotlk+leveling+zones. The document body contains garbled text but includes the malicious URL and several Shopify-hosted PDF links, suggesting a lure to a malicious site.

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=wotlk+leveling+zones
    • http://files.honeybeetreasure.com/uploads/1/3/0/7/130775434/5ea984b04d49f2.pdf
    • http://files.thetimebetweenis.org/uploads/1/3/2/6/132681877/zelojatelarowul.pdf
    • http://files.thoughtandprogress.com/uploads/1/3/0/7/130776327/mizubikut-vifoves-ligajerinu.pdf
    • http://files.intrendsic.net/uploads/1/3/0/7/130775063/pirozoga-rixujoburoru-kutopewu.pdf
    • http://files.revmelodyann.com/uploads/1/3/2/6/132680869/loguduwaxemodaxul.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/8151/5673/files/51274582779.pdf
    • https://cdn.shopify.com/s/files/1/0431/7085/7122/files/valutigopeliwogaraw.pdf
    • https://cdn.shopify.com/s/files/1/0431/7940/9568/files/44448931501.pdf
    • https://cdn.shopify.com/s/files/1/0436/4750/0448/files/26681428935.pdf
    • https://cdn.shopify.com/s/files/1/0431/1695/3767/files/bekafakapukezuduza.pdf
    • https://cdn.shopify.com/s/files/1/0428/0067/7031/files/ferejelakenipuxuxenapud.pdf
    • https://cdn.shopify.com/s/files/1/0431/1462/7234/files/madovavewozabemaguwo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/38746106010.pdf
    • https://cdn.shopify.com/s/files/1/0431/0073/3596/files/sulebi.pdf
    • https://cdn.shopify.com/s/files/1/0427/3651/7286/files/lixekusaduguripedor.pdf
    • https://cdn.shopify.com/s/files/1/0430/2117/2897/files/xunirutazoliseselarupinu.pdf
    • https://cdn.shopify.com/s/files/1/0432/9078/8000/files/varawudezir.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000064a7.bin
decc377a5c3fb958bc40a7905575003f2a8609cd6131dfd51c1124a7288833fd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64A7 4736 bytes
font_01_sfnt_off000074fd.bin
b3d820faee20a9d4d2c41373e6c7c0945f4bf803205df8a6f2bc709f6c50629b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74FD 10148 bytes

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