Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b52e3779f7ee653…

MALICIOUS

PDF

47.3 KB Created: 2020-08-07 03:54:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ab2a551b6dc992916cd505af2c8118c7 SHA-1: 50959c236865b270050f50ed04e90bb1932ea446 SHA-256: 2b52e3779f7ee6532d87338ae965f82e0f1b53aae0e9b06a393712bb2e89ce8c
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a mass external link farm, with one link pointing to a known malicious redirector. The document body also contains a call-to-action phrase, suggesting a lure to trick the user into clicking the malicious link. The redirector URL is likely used to deliver a second-stage payload.

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.cc/pify?keyword=vedic+mathematics+books+pdf+free+download
    • http://files.waysideresources.com/uploads/1/3/0/7/130775400/pinopibek.pdf
    • http://files.mymaryjanerehab.com/uploads/1/3/1/3/131380598/cbc9a2cf0687fb4.pdf
    • http://files.pvenw.org/uploads/1/3/0/7/130776206/d4d876656776620.pdf
    • https://cdn.shopify.com/s/files/1/0435/2658/6532/files/moresipakusoruwimub.pdf
    • https://cdn.shopify.com/s/files/1/0429/4865/7318/files/18534451914.pdf
    • https://cdn.shopify.com/s/files/1/0433/9816/8727/files/fovamorofurival.pdf
    • https://cdn.shopify.com/s/files/1/0435/2521/0263/files/apollo_munich_easy_health_premium_chart.pdf
    • https://cdn.shopify.com/s/files/1/0432/3121/5780/files/kukesepede.pdf
    • https://cdn.shopify.com/s/files/1/0434/7727/0678/files/libro_para_colorear_animales.pdf
    • https://cdn.shopify.com/s/files/1/0433/8450/4474/files/56179197846.pdf
    • https://cdn.shopify.com/s/files/1/0437/1762/3957/files/65164149488.pdf
    • https://cdn.shopify.com/s/files/1/0430/1609/3849/files/76112507102.pdf
    • https://cdn.shopify.com/s/files/1/0429/4692/0615/files/bodivun.pdf
    • https://cdn.shopify.com/s/files/1/0427/7442/9852/files/94691016294.pdf
    • https://cdn.shopify.com/s/files/1/0428/4583/1324/files/xomejumabelabupi.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_off00006aa2.bin
367ee2310e946c0177031c74cdb028604025521246c73ae2aa164db86b9e64d4
pdf-font-stream PDF embedded font (sfnt) at offset 0x6AA2 5444 bytes
font_01_sfnt_off00007d04.bin
634ce156772f14d19769d874dd740d931b946dfb77b0d74f59d9700bdd279494
pdf-font-stream PDF embedded font (sfnt) at offset 0x7D04 11092 bytes
font_02_sfnt_off0000a18a.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176
pdf-font-stream PDF embedded font (sfnt) at offset 0xA18A 4324 bytes