Malicious PDF — malware analysis report

Static analysis result for SHA-256 df6a1211ebd12224…

MALICIOUS

PDF

41.6 KB Created: 2020-08-12 12:16:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4a88db08a20b1b4075002652567126aa SHA-1: 976cfac4dbb87a1ce0a862369937462e345f4f24 SHA-256: df6a1211ebd122244634163b5efba9c62c0a0fefee51c6f8bed5fad6f67e7c59
120 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, with critical heuristics indicating it functions as a redirector and a link farm. One of the primary links points to a known malicious redirector, ttraff.com, which is likely used to obscure the final destination or deliver a malicious payload. The document body itself is heavily obfuscated and contains remnants of the malicious URL, suggesting the document's purpose is to lure users into clicking these links.

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=bibliotecas+virtuales+definicion+pdf
    • http://files.paskes.com/uploads/1/3/2/3/132302859/tevikipite_kowadaj_ropijinosagog_kaleni.pdf
    • http://files.roejendradesigns.com/uploads/1/3/1/4/131406762/wugagumigejo.pdf
    • http://luwujobi.fsk-midpen.com/uploads/1/3/1/1/131164250/jotesaxaso-retazobaj.pdf
    • http://files.atouchofclaas.net/uploads/1/3/1/3/131381658/2c23ea5d9.pdf
    • http://sezomagal.nwgyfl.club/uploads/1/3/0/7/130776644/jadutanekano-wosigabebabow-zilufogo.pdf
    • https://cdn.shopify.com/s/files/1/0437/6009/1287/files/squeeze_theorem_examples.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/welilavuruwad.pdf
    • https://cdn.shopify.com/s/files/1/0436/9465/3594/files/gw2_firebrand_build.pdf
    • https://cdn.shopify.com/s/files/1/0427/6341/9814/files/18182177469.pdf
    • https://cdn.shopify.com/s/files/1/0435/3484/4059/files/zezofegodomid.pdf
    • https://cdn.shopify.com/s/files/1/0429/6838/3642/files/3711181683.pdf
    • https://cdn.shopify.com/s/files/1/0432/4681/3344/files/autocad_import_not_working.pdf
    • https://cdn.shopify.com/s/files/1/0441/3207/3624/files/sat_bubble_answer_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0432/6470/4662/files/fps_counter_unity.pdf
    • https://cdn.shopify.com/s/files/1/0432/1368/4891/files/4989776590.pdf
    • https://cdn.shopify.com/s/files/1/0429/3984/2719/files/risutabelowawitivitusipu.pdf
    • https://cdn.shopify.com/s/files/1/0433/8617/5651/files/sort_linked_list_java.pdf
    • https://cdn.shopify.com/s/files/1/0437/5671/6186/files/24934645698.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_off00006114.bin
77fd6615a52149f6e7b0d60191e195d7cfcc57222e3d78de1a22802cd6af8800
pdf-font-stream PDF embedded font (sfnt) at offset 0x6114 5400 bytes
font_01_sfnt_off00007373.bin
7679ca766de95677572dcb9f5d42b4f272987294a6ce475f61a467dd6d5bf8c7
pdf-font-stream PDF embedded font (sfnt) at offset 0x7373 11236 bytes