Malicious PDF — malware analysis report

Static analysis result for SHA-256 e030eb9c80d7a4a5…

MALICIOUS

PDF

43.0 KB Created: 2020-08-11 10:10:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4877b2cb7a7a454e3070bf535314ebea SHA-1: 47e9ff99b985c13c07478c3d1696991c5666d50b SHA-256: e030eb9c80d7a4a55a9cebc3d4f7d06779cc05d8121dc0ed1bfdbee6134a5693
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one heuristic specifically identifying it as a PDF SEO link farm. The primary malicious link points to a redirector at 'ttraff.ru', which is flagged as malicious. The document body itself is heavily obfuscated and contains references to the redirector URL, suggesting an attempt to lure users to malicious content through a link farm.

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=carcassi+guitarra+pdf
    • http://files.hannaryynanen.com/uploads/1/3/1/6/131607467/soduxodudimuwu.pdf
    • http://zakudap.stuartkettleartist.com/uploads/1/3/0/7/130776407/256061.pdf
    • http://files.letstalkpublichealth.com/uploads/1/3/1/4/131406274/7103700.pdf
    • https://cdn.shopify.com/s/files/1/0433/7270/7990/files/ausencia_de_cuerpo_calloso.pdf
    • https://cdn.shopify.com/s/files/1/0431/1423/4017/files/a_travs_del_vaso_acordes.pdf
    • https://cdn.shopify.com/s/files/1/0437/0097/7818/files/bahasa_arab_sehari_hari.pdf
    • https://cdn.shopify.com/s/files/1/0431/0463/2998/files/bivupunako.pdf
    • https://cdn.shopify.com/s/files/1/0437/8404/4705/files/lokale_und_temporale_prpositionen.pdf
    • https://cdn.shopify.com/s/files/1/0441/1876/9816/files/sasewudel.pdf
    • https://cdn.shopify.com/s/files/1/0431/5627/5362/files/56588289974.pdf
    • https://cdn.shopify.com/s/files/1/0438/0826/0258/files/wondershare_video_converter.pdf
    • https://cdn.shopify.com/s/files/1/0428/4094/8903/files/vifuwunapes.pdf
    • https://cdn.shopify.com/s/files/1/0430/0141/3785/files/green_day_boulevard_of_broken_dreams_tab.pdf
    • https://cdn.shopify.com/s/files/1/0429/4855/9004/files/boy_scout_of_the_philippines_oath_and_law.pdf
    • https://cdn.shopify.com/s/files/1/0429/7339/7145/files/sudobulitagiseledemexid.pdf
    • https://cdn.shopify.com/s/files/1/0431/8350/5562/files/jquery_remove_all_classes.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_off00006af8.bin
f1456329aacfc3bdce46dbe49b6b4a27e84801495d0c449d0e60839954ba7348		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AF8 5196 bytes
font_01_sfnt_off00007cb0.bin
305b3378aa964ec89ba0b0514f95b6f250316c10371e9f6611f72ab7f9511cf7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CB0 10144 bytes

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