Malicious PDF — malware analysis report

Static analysis result for SHA-256 91c0f0d4d816b08d…

MALICIOUS

PDF

38.4 KB Created: 2020-08-19 20:38:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 722fc80fb2fc12da6dd9b2da88e0dbfa SHA-1: 203daed71cf8173701dd38addeed37e39274ac4d SHA-256: 91c0f0d4d816b08d1d0080a5329bb9fbc178843c00429334c7eaa5c8acd8f1ca
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one identified as a malicious redirector. This redirector is likely intended to lead the user to a malicious site, potentially for further exploitation or credential harvesting. The document body text, though partially corrupted, mentions 'American flag star stencil template', suggesting a lure to entice clicks.

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=american+flag+star+stencil+template
    • http://gebodekeb.shimmerandspice.com/uploads/1/3/1/4/131482995/kisojim-pafifidofugok-doganupiwe.pdf
    • http://puzig.dopeceiling.com/uploads/1/3/1/4/131438474/wozamimoziwe.pdf
    • http://files.bravohobby.com/uploads/1/3/0/7/130775675/29900.pdf
    • https://cdn.shopify.com/s/files/1/0432/7417/4632/files/80413770200.pdf
    • https://cdn.shopify.com/s/files/1/0428/8679/1334/files/26374042578.pdf
    • https://cdn.shopify.com/s/files/1/0431/8344/0030/files/83233921127.pdf
    • https://cdn.shopify.com/s/files/1/0437/7100/3037/files/minecraft_cracked_1._12_2.pdf
    • https://cdn.shopify.com/s/files/1/0448/4133/6989/files/beneficiation_of_iron_ore.pdf
    • https://cdn.shopify.com/s/files/1/0427/9166/5830/files/86739724342.pdf
    • https://cdn.shopify.com/s/files/1/0432/4697/7179/files/39666629179.pdf
    • https://cdn.shopify.com/s/files/1/0432/5100/7638/files/vesapawa.pdf
    • https://cdn.shopify.com/s/files/1/0441/1044/6744/files/ametropias_oftalmologia.pdf
    • https://cdn.shopify.com/s/files/1/0429/0212/6755/files/96022794747.pdf
    • https://cdn.shopify.com/s/files/1/0434/6334/4280/files/14879433553.pdf
    • https://cdn.shopify.com/s/files/1/0429/2601/4620/files/74493404.pdf
    • https://cdn.shopify.com/s/files/1/0437/8561/7566/files/sekinozamesida.pdf
    • https://cdn.shopify.com/s/files/1/0436/2698/7680/files/chopin_ballade_in_g_minor_op_23_no_1.pdf
    • https://cdn.shopify.com/s/files/1/0430/4997/5961/files/apollo_1500_gate_opener_manual.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_off00005717.bin
c7c3ef51d795ef2c8035d27d02e38ae411fc8598c493a95eb67bb116eeabc924
pdf-font-stream PDF embedded font (sfnt) at offset 0x5717 5324 bytes
font_01_sfnt_off00006914.bin
e2504738f20faa23fcaf470bf282f1c2e53f62d20177b7ac94f4b0e10d1c76dc
pdf-font-stream PDF embedded font (sfnt) at offset 0x6914 10448 bytes