Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7066d38ae390a97…

MALICIOUS

PDF

46.1 KB Created: 2020-07-31 03:32:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 95e2e001da940d5b5ff85c4263f6d890 SHA-1: 389c9523cd98f31e678ddd97831ab99d5e0d8eee SHA-256: e7066d38ae390a977a6653ab95a6c5ae164b910655f3189e479adba1e20fbd09
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, a technique often used in SEO link farms to manipulate search engine rankings or to distribute malicious content. One of the embedded URLs points to a known malicious redirector, indicating a phishing or malware distribution attempt. The document body, though heavily obfuscated, contains text that suggests a lure related to 'Almanac book pdf'.

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.ru/pify?keyword=almanac+book+pdf
    • http://files.kathleenmarchetti.com/uploads/1/3/0/7/130739275/8454044.pdf
    • http://files.apriljonesms.com/uploads/1/3/1/4/131407112/mixakabadafasati.pdf
    • http://files.clintweiler.com/uploads/1/3/0/8/130813694/3f3f9e98f8c1ceb.pdf
    • http://files.falconfamiliesofky.afaparents.org/uploads/1/3/1/4/131453267/465011.pdf
    • https://cdn.shopify.com/s/files/1/0429/0537/0787/files/94194990711.pdf
    • https://cdn.shopify.com/s/files/1/0436/7079/8489/files/bufikoxepawajisa.pdf
    • https://cdn.shopify.com/s/files/1/0438/8959/0427/files/4087369637.pdf
    • https://cdn.shopify.com/s/files/1/0433/5622/5688/files/99250808521.pdf
    • https://cdn.shopify.com/s/files/1/0427/4877/2508/files/2341413866.pdf
    • https://cdn.shopify.com/s/files/1/0429/9925/1093/files/makazi.pdf
    • https://cdn.shopify.com/s/files/1/0431/6338/6016/files/1241075492.pdf
    • https://cdn.shopify.com/s/files/1/0437/0215/7466/files/xoxoxosujizarunemof.pdf
    • https://cdn.shopify.com/s/files/1/0431/3110/9540/files/dobitobogovapaj.pdf
    • https://cdn.shopify.com/s/files/1/0431/3153/5524/files/zojunabefoxoxototajutaxi.pdf
    • https://cdn.shopify.com/s/files/1/0440/8187/3048/files/wepekusotod.pdf
    • https://cdn.shopify.com/s/files/1/0441/2702/7352/files/94406959342.pdf
    • https://cdn.shopify.com/s/files/1/0432/2807/0052/files/2712230256.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_off000077af.bin
3534da0e46e14de8bde045af16de7ac1b08659059b660080326e039ada7d8a50		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77AF 4764 bytes
font_01_sfnt_off000087ad.bin
b345bc1827f661d80f1c40f838c132e100becb748ac8d090f4b878e356af41a3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x87AD 10736 bytes

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