Malicious PDF — malware analysis report

Static analysis result for SHA-256 eddf0abb8718f575…

MALICIOUS

PDF

44.8 KB Created: 2020-08-15 19:57:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1aad5395f7de12d485fbfba4675f09f6 SHA-1: 8ca47f00764dc811a25ef044a8a5bc29593818df SHA-256: eddf0abb8718f5756e7afda8eed54f3f619f24f8d0c26c8cb0c5a995b7624d9e
128 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to ttraff.ru. This indicates the document is designed to redirect users to malicious sites. Additionally, a PDF SEO link farm heuristic was triggered, with numerous links pointing to Shopify domains, suggesting an attempt to obscure the malicious redirector. The document body contains text and URLs that align with this redirection-based attack pattern.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/wb?keyword=schaffer%20writing%20method%20pdf
    • http://files.mavisdzaka.com/uploads/1/3/1/3/131379615/bufuzenosuvasorire.pdf
    • http://files.agarnetrose.com/uploads/1/3/1/0/131070009/duwik.pdf
    • http://files.stfranciscentre.net/uploads/1/3/0/7/130739690/kuterubabajusosakux.pdf
    • http://files.boyrazak.com/uploads/1/3/0/7/130739836/deletijarum_zujujob_dikiragidizuz.pdf
    • https://cdn.shopify.com/s/files/1/0433/5344/0414/files/anemia_drepanocitica_en_embarazo.pdf
    • https://cdn.shopify.com/s/files/1/0429/8778/2297/files/susexod.pdf
    • https://cdn.shopify.com/s/files/1/0431/6705/6028/files/jezovuwir.pdf
    • https://cdn.shopify.com/s/files/1/0432/6414/7609/files/kindle_paperwhite_format_support.pdf
    • https://cdn.shopify.com/s/files/1/0433/7231/4789/files/6th_grade_math_tests.pdf
    • https://cdn.shopify.com/s/files/1/0435/4274/1143/files/rooster_alice_in_chains_meaning.pdf
    • https://cdn.shopify.com/s/files/1/0435/4116/8283/files/daisy_flower_information_in_marathi_wikipedia.pdf
    • https://cdn.shopify.com/s/files/1/0449/3423/4280/files/materiales_no_metalicos_polimeros.pdf
    • https://cdn.shopify.com/s/files/1/0435/3576/1567/files/personal_finance_kapoor_10th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0427/5725/9420/files/97527796027.pdf
    • https://cdn.shopify.com/s/files/1/0438/2670/8640/files/bombastic_brothers_mod_apk_free_shopping.pdf
    • https://cdn.shopify.com/s/files/1/0428/4956/6886/files/68337242132.pdf
    • https://cdn.shopify.com/s/files/1/0432/2924/9694/files/16466165564.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_off0000713a.bin
fdf7ee2a05733580bf659e2f5bc088452f1cc17d554b940afe22a2ef136bb978
pdf-font-stream PDF embedded font (sfnt) at offset 0x713A 5556 bytes
font_01_sfnt_off000083f9.bin
2d3503f4757e356a07160b6dd199aaa9a3717088d950fcf6cad90edaaa590419
pdf-font-stream PDF embedded font (sfnt) at offset 0x83F9 10104 bytes