Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7ecf651d9773a8f…

MALICIOUS

PDF

43.7 KB Created: 2020-08-20 06:40:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a1651f7ead84f94e93c067ac4f2efcbd SHA-1: 02f376f43fdba7863a628cc945c762e857678b4d SHA-256: a7ecf651d9773a8f01777a707bc6ca75e49feecbd4efa0df52141cb142ffbd1c
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.001 Malicious Link

The PDF contains multiple embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains text that suggests an urgency lure, such as 'account will be terminated'. The primary malicious URL identified is https://ttraff.com/pify?keyword=abbott+alinity+m+pdf, which likely serves as a gateway to further malicious content. The presence of a large number of external PDF links, many hosted on Shopify, suggests a link farm intended for SEO poisoning or to obscure the final destination.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=abbott+alinity+m+pdf
    • http://guzex.behindnashville.com/uploads/1/3/0/8/130873987/gomokavimadusifisine.pdf
    • http://files.lady-arlete.com/uploads/1/3/1/3/131380008/8231599.pdf
    • http://files.ridecarousel.com/uploads/1/3/1/4/131438829/tumemeki.pdf
    • http://files.topcamfilmservices.com/uploads/1/3/1/3/131398419/jipowajufexisex-derevo-nerexudinile-viludufoz.pdf
    • http://kivev.geierbrainlab.com/uploads/1/3/0/9/130969723/vixoxikerape_xetuxe_falafigobujeton.pdf
    • http://guzex.behindnashville.com/uploads/1/3
    • https://cdn.shopify.com/s/files/1/0431/1321/8199/files/transistor_a1015_datasheet.pdf
    • https://cdn.shopify.com/s/files/1/0433/3341/9160/files/neoplasia_prostata.pdf
    • https://cdn.shopify.com/s/files/1/0440/8072/6168/files/60385916363.pdf
    • https://cdn.shopify.com/s/files/1/0427/9628/6119/files/mass_incarceration_in_the_us.pdf
    • https://cdn.shopify.com/s/files/1/0430/5502/2234/files/burkitt_s_lymphoma.pdf
    • https://cdn.shopify.com/s/files/1/0439/1341/2760/files/wiwiv.pdf
    • https://cdn.shopify.com/s/files/1/0430/4296/3613/files/cell_and_molecular_biology_concepts_and_experiments_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0427/7580/6119/files/4164719237.pdf
    • https://cdn.shopify.com/s/files/1/0431/5083/5878/files/easy_chicken_fajitas_baking_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0434/4827/1000/files/zororeradazulunuwi.pdf
    • https://cdn.shopify.com/s/files/1/0432/7541/9798/files/goxixaxid.pdf
    • https://cdn.shopify.com/s/files/1/0437/6503/9261/files/3930701573.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_off00006a99.bin
689f62f0d889d95535cca795f4b83ab51409e7a173127eb114cf0df681eed6bf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A99 5144 bytes
font_01_sfnt_off00007c0c.bin
38a9c01b11b5857183549e62e621f38f123dc9d4db24c12e2615946d52c76931		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C0C 10580 bytes

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