Malicious PDF — malware analysis report

Static analysis result for SHA-256 1bcaed87c403fa77…

MALICIOUS

PDF

39.8 KB Created: 2020-08-28 07:19:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5b1048e6b5c49f85daab659a062493ed SHA-1: d61c9605f6db2e4443b97be6560426004a5f4493 SHA-256: 1bcaed87c403fa77068804055f73c3d755ba1bccc53dedd7eecd1fc245e8038b
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains the URL that triggers the redirector. This suggests a phishing or scam attempt where the user is enticed to click a link that leads to malicious infrastructure.

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=camel+zippo+price+guide
    • http://nusew.cranfieldchristianfellowship.com/uploads/1/3/0/7/130776330/3243792.pdf
    • http://derezubak.thielelibrary.website/uploads/1/3/1/4/131407995/8790087.pdf
    • http://files.flamelilyarts.com/uploads/1/3/0/8/130814788/70cfcb5b4.pdf
    • http://files.mrkohler.com/uploads/1/3/0/7/130739916/2764507.pdf
    • http://bazivitux.eduardoprado.com/uploads/1/3/0/7/130775162/9cd1cd0.pdf
    • https://cdn.shopify.com/s/files/1/0436/6086/9785/files/amazing_grace_clarinet.pdf
    • https://cdn.shopify.com/s/files/1/0430/4578/1665/files/32861099220.pdf
    • https://cdn.shopify.com/s/files/1/0430/6773/6225/files/suitcase_fusion_7_free.pdf
    • https://cdn.shopify.com/s/files/1/0433/9499/0231/files/25120769064.pdf
    • https://cdn.shopify.com/s/files/1/0435/0869/5192/files/dedesarila.pdf
    • https://cdn.shopify.com/s/files/1/0428/9842/3967/files/95618246532.pdf
    • https://cdn.shopify.com/s/files/1/0431/2953/6676/files/33894131475.pdf
    • https://cdn.shopify.com/s/files/1/0432/5477/5970/files/rarak.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/64989875230.pdf
    • https://cdn.shopify.com/s/files/1/0434/3123/1637/files/66090931823.pdf
    • https://cdn.shopify.com/s/files/1/0430/3709/8133/files/arduino_projects_book.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/8007882555.pdf
    • https://cdn.shopify.com/s/files/1/0432/3213/3278/files/xewusikuwujabumo.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_off00005ca6.bin
522dde2450da81e09962edf0484f22fa4ca5ba294df626d78ff27417acdac012		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CA6 5172 bytes
font_01_sfnt_off00006e23.bin
81ba8d924bd96d0a20ad649bd4b172bb3d546925e90d80f9df396b233f30557e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E23 10668 bytes

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