Malicious PDF — malware analysis report

Static analysis result for SHA-256 221c7b88ba88acca…

MALICIOUS

PDF

48.1 KB Created: 2020-08-09 09:37:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7cfe66e09ac4fb054ec38c13b9d446cd SHA-1: a79e583989d043503ac5db57f057a47fc5dd2301 SHA-256: 221c7b88ba88accaf307083315537e8448b454f1c5deae792192f5197ed751df
120 Risk Score

Malware Insights

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

The PDF contains numerous links, including one to a known malicious redirector at 'ttraff.com'. The document body, though partially corrupted, contains the URL 'https://ttraff.com/pify?keyword=branches+of+science+and+their+meaning+pdf', suggesting a lure to download a PDF. The presence of a large number of external links, many hosted on Shopify, indicates a link farm designed to distribute malicious content.

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=branches+of+science+and+their+meaning+pdf
    • http://fizawafuk.turuncapartment.com/uploads/1/3/0/8/130814328/levobib.pdf
    • http://files.annagalatirealtor.com/uploads/1/3/0/7/130776718/979473.pdf
    • http://woruxa.craftedcasesnc.com/uploads/1/3/1/6/131606552/jovukunivijina.pdf
    • http://rewavizi.racing-pigeon-media.com/uploads/1/3/1/3/131398591/9344303.pdf
    • https://cdn.shopify.com/s/files/1/0437/1195/5098/files/lemer.pdf
    • https://cdn.shopify.com/s/files/1/0429/7539/5993/files/lutevapitevujemelujonil.pdf
    • https://cdn.shopify.com/s/files/1/0428/4363/5879/files/makevarawonenez.pdf
    • https://cdn.shopify.com/s/files/1/0436/0486/9277/files/14934928142.pdf
    • https://cdn.shopify.com/s/files/1/0439/6243/3694/files/acetato_de_ulipristal_miomas.pdf
    • https://cdn.shopify.com/s/files/1/0432/7079/9510/files/44110733146.pdf
    • https://cdn.shopify.com/s/files/1/0438/2071/2098/files/social_learning_and_personality_development.pdf
    • https://cdn.shopify.com/s/files/1/0437/3954/5761/files/7717537317.pdf
    • https://cdn.shopify.com/s/files/1/0440/1207/7206/files/balloon_coloring_page.pdf
    • https://cdn.shopify.com/s/files/1/0434/1104/6558/files/multiple_alleles_problems_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vevisip.pdf
    • https://cdn.shopify.com/s/files/1/0432/2587/4600/files/niwokeful.pdf
    • https://cdn.shopify.com/s/files/1/0431/3251/8555/files/carpinejar_livros.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_off00007d53.bin
d579981e9c9ddcc9449c01fc5f0f1105d404a5999e0331702fc1552fbd46421c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D53 5588 bytes
font_01_sfnt_off0000902b.bin
02fd7025fb5100b8191ea4798a0d59976a0435dc950df611ab0c1446af220bf7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x902B 9696 bytes

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