Malicious PDF — malware analysis report

Static analysis result for SHA-256 90241c5133c45859…

MALICIOUS

PDF

47.6 KB Created: 2020-08-29 17:20:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dd137c5b8cf8bbe25835c426a56ad06e SHA-1: 7175dbf62b6a4d6df6ff3d232e3d7ae3eb4d117a SHA-256: 90241c5133c458596ce1c754451568ed0cf95531a552ede1ddca76e6c4c3c8b3
128 Risk Score

Malware Insights

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

The PDF contains a link to a malicious redirector, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. This redirector is likely used to deliver a payload or phish for credentials. The document body and embedded URLs suggest a lure related to game hacks, further supported by the PDF_SEO_LINK_FARM heuristic indicating a large number of linked PDFs, likely for SEO manipulation to attract victims. No scripts were extracted from this sample.

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.me/wix?keyword=hill+climb+racing+indir+hile
    • https://cdn.shopify.com/s/files/1/0430/8526/7097/files/89743835933.pdf
    • https://cdn.shopify.com/s/files/1/0433/3905/5258/files/genero_lirico_origen.pdf
    • https://cdn.shopify.com/s/files/1/0436/5615/1190/files/charlotte_s_web.pdf
    • https://cdn.shopify.com/s/files/1/0430/6858/8194/files/autocad_plant_3d_download.pdf
    • https://cdn.shopify.com/s/files/1/0435/2973/2248/files/mibadubilij.pdf
    • https://cdn.shopify.com/s/files/1/0433/2178/6521/files/81522520247.pdf
    • https://cdn.shopify.com/s/files/1/0431/2730/8454/files/22544825546.pdf
    • https://cdn.shopify.com/s/files/1/0430/0944/1953/files/mafomir.pdf
    • https://cdn.shopify.com/s/files/1/0431/7075/8820/files/66622909655.pdf
    • https://cdn.shopify.com/s/files/1/0432/3311/6317/files/51813809001.pdf
    • https://cdn.shopify.com/s/files/1/0431/0843/4081/files/nonokatisumogijoferuri.pdf
    • https://cdn.shopify.com/s/files/1/0437/9577/5650/files/bible_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/8729/7696/files/tisopejejezebitule.pdf
    • https://cdn.shopify.com/s/files/1/0438/6498/1664/files/xisamasazepebole.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006030.bin
d4a4e6eb941b0e1285be07e416f0dec010ab31290ffe1a3ed31f547c8ca64c8f
pdf-font-stream PDF embedded font (sfnt) at offset 0x6030 5276 bytes
font_01_sfnt_off000071d8.bin
1ae8a615f374a13c949cdfa4e2fab6aa9b16a73cd2079b32f914c399fac9c277
pdf-font-stream PDF embedded font (sfnt) at offset 0x71D8 14336 bytes
font_02_sfnt_off00009cd2.bin
e02432191d952bf4ca0be4cfeafc10308785ce9d9f3781c3262e4e8a73b31f63
pdf-font-stream PDF embedded font (sfnt) at offset 0x9CD2 16060 bytes