Malicious PDF — malware analysis report

Static analysis result for SHA-256 918d6bb4c36bfb76…

MALICIOUS

PDF

42.1 KB Created: 2020-08-07 17:55:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 458c5ad36e9739db67c934045d65658f SHA-1: 3d806bf369b19a1ccd9753ae2f9ea65b477e77ee SHA-256: 918d6bb4c36bfb767d7fd3449d7f7c171e91ff586f3b649e0d0d1f85709c2631
120 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many pointing to Shopify domains hosting other PDFs, suggesting a link farm or SEO poisoning tactic. One critical heuristic identified a link to a known malicious redirector at https://ttraff.cc/pify?keyword=haunted+heartland+pdf. This indicates the document's primary purpose is to redirect users to malicious infrastructure, likely for further exploitation or phishing. 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.cc/pify?keyword=haunted+heartland+pdf
    • http://files.fightnightblog.com/uploads/1/3/2/6/132681664/fufefesik-tuxuj-noligugafe.pdf
    • http://mubadoku.floydhicks.com/uploads/1/3/0/8/130873851/595093.pdf
    • http://files.sweetwaterequestrian.com/uploads/1/3/0/8/130813325/8854696.pdf
    • http://files.blusheventschicago.com/uploads/1/3/1/4/131410007/fopigijuted-zovop-wimeselana.pdf
    • http://files.createleadersnow.com/uploads/1/3/0/7/130740249/2181253.pdf
    • https://cdn.shopify.com/s/files/1/0434/7055/3238/files/rojamax.pdf
    • https://cdn.shopify.com/s/files/1/0428/1224/4134/files/pozinediwegibedeli.pdf
    • https://cdn.shopify.com/s/files/1/0437/0428/7383/files/mujoleri.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/27984898694.pdf
    • https://cdn.shopify.com/s/files/1/0437/3407/3505/files/jebogowemugumosit.pdf
    • https://cdn.shopify.com/s/files/1/0434/7727/0692/files/inversion_after_negative_adverbs_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0430/5901/9933/files/61949938759.pdf
    • https://cdn.shopify.com/s/files/1/0430/7622/3129/files/73440672054.pdf
    • https://cdn.shopify.com/s/files/1/0431/7279/0432/files/33107398102.pdf
    • https://cdn.shopify.com/s/files/1/0433/0897/4235/files/4549356377.pdf
    • https://cdn.shopify.com/s/files/1/0429/5488/3231/files/64736911645.pdf
    • https://cdn.shopify.com/s/files/1/0431/3504/1693/files/jexenosi.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_off0000666c.bin
39d78bbe95ff2a1c24f872b79c0080f21d8a625de0523bfe413af5f37500eab2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x666C 4912 bytes
font_01_sfnt_off00007717.bin
591dae0bb85ef44e8b5314b631ebac5f0c98f500391d9f9fe0e9a486b559ce9e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7717 10780 bytes

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