Malicious PDF — malware analysis report

Static analysis result for SHA-256 98681a6528204391…

MALICIOUS

PDF

45.9 KB Created: 2020-08-04 20:50:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6c3def25e192c5a097e1e79eca52d3cc SHA-1: d1ac0b6883fb40eede2a6bdb83937c6ada4bf720 SHA-256: 98681a652820439128c8a8609226110802ec4fc32fa49399e84415fe4bfaa64e
128 Risk Score

Malware Insights

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

The PDF contains a mass of external links, including a critical link to a known malicious redirector at `https://ttraff.com/pify?keyword=convertir+de+pdf+a+word+online+con+ocr`. The document body also contains a call-to-action phrase, suggesting a lure to trick the user into clicking the malicious link. The presence of numerous Shopify-hosted PDF files indicates a link farm designed to improve search engine ranking for malicious content.

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.com/pify?keyword=convertir+de+pdf+a+word+online+con+ocr
    • http://files.madisonavenueschoolofarts.org/uploads/1/3/2/8/132815190/rilosujubiz.pdf
    • http://files.sarahgray.info/uploads/1/3/0/7/130775309/wibozenan-vubur-rovojoxevis.pdf
    • http://files.imanshaggag.com/uploads/1/3/0/7/130776529/bovubefiwosal.pdf
    • https://cdn.shopify.com/s/files/1/0429/7405/2503/files/zomamuzawuselexapiredubiv.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/38659434623.pdf
    • https://cdn.shopify.com/s/files/1/0428/7430/6719/files/xegovo.pdf
    • https://cdn.shopify.com/s/files/1/0427/5381/8790/files/loxuwomoso.pdf
    • https://cdn.shopify.com/s/files/1/0433/4298/7423/files/texatijukopijak.pdf
    • https://cdn.shopify.com/s/files/1/0439/9307/1774/files/gobabirigegupemagosisak.pdf
    • https://cdn.shopify.com/s/files/1/0430/5115/5609/files/fat_raps_3.pdf
    • https://cdn.shopify.com/s/files/1/0431/5627/5360/files/sitemaludonipepupe.pdf
    • https://cdn.shopify.com/s/files/1/0434/0151/1077/files/juwomiruv.pdf
    • https://cdn.shopify.com/s/files/1/0434/1553/5774/files/46409216425.pdf
    • https://cdn.shopify.com/s/files/1/0433/9056/6556/files/economist_style_guide.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_off000059e2.bin
47497747dce4323cc73a59fd674dabdba3580d8c6f2a4f0d54b7c4a8b4ca2a2c
pdf-font-stream PDF embedded font (sfnt) at offset 0x59E2 4932 bytes
font_01_sfnt_off00006ac9.bin
fccbd2befed32daba70e5a59ac6fad75692df8187e7fc6a781209e32d9006032
pdf-font-stream PDF embedded font (sfnt) at offset 0x6AC9 16748 bytes
font_02_sfnt_off00009c50.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34
pdf-font-stream PDF embedded font (sfnt) at offset 0x9C50 4324 bytes