Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c0ce1dafdaad17c…

MALICIOUS

PDF

41.8 KB Created: 2020-08-01 07:24:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 683519edd88dbfe6ad5f88d9a558b317 SHA-1: 1847780ae9d8e671ab3645ec3e7f03a97bb973c9 SHA-256: 3c0ce1dafdaad17ccd56cabab65324aad2bf959071e7004e5f9957111b8760e0
128 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a download button, which is a common lure for phishing or malware delivery. The document body and embedded links suggest a social engineering attempt to trick the user into clicking the link. The primary malicious IOC is the redirector URL.

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=how+to+delete+discord+messages+fast
    • http://files.mrshowesclass.com/uploads/1/3/2/7/132710601/3255803.pdf
    • http://files.vanessaarmandtesol.com/uploads/1/3/2/6/132695408/17f211eda.pdf
    • http://files.autisticadults.com/uploads/1/3/1/1/131163590/e407fd34.pdf
    • http://files.beyondbodyclinic.com/uploads/1/3/0/7/130775556/mojimujot.pdf
    • https://cdn.shopify.com/s/files/1/0433/3309/1480/files/45377297582.pdf
    • https://cdn.shopify.com/s/files/1/0431/1161/2578/files/29491863380.pdf
    • https://cdn.shopify.com/s/files/1/0437/3289/3857/files/zizexekiwubigalafusopilun.pdf
    • https://cdn.shopify.com/s/files/1/0430/2848/0157/files/36154529891.pdf
    • https://cdn.shopify.com/s/files/1/0435/3890/7288/files/83163262600.pdf
    • https://cdn.shopify.com/s/files/1/0428/1909/2647/files/vomorodalofan.pdf
    • https://cdn.shopify.com/s/files/1/0433/7814/7491/files/pejewulafuv.pdf
    • https://cdn.shopify.com/s/files/1/0429/3731/9590/files/xitekez.pdf
    • https://cdn.shopify.com/s/files/1/0428/5366/2883/files/55143311974.pdf
    • https://cdn.shopify.com/s/files/1/0438/4253/5574/files/77290309222.pdf
    • https://cdn.shopify.com/s/files/1/0434/3182/1473/files/19993746760.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/52325197595.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_off000063c5.bin
3f681f41e97cdb73088f0aec84227f5a543707be7d7689b7635b82792b81300a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63C5 5396 bytes
font_01_sfnt_off00007614.bin
5309d012fbd7f38891267617171500aa1b4309c611dc942cfcd8c5ea986600f8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7614 10536 bytes

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