Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d2e1985a0eb72f5…

MALICIOUS

PDF

40.2 KB Created: 2020-07-11 14:36:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5e80ff8b8d07965adb73b8959a8e7ee9 SHA-1: 2902922735dede7ccb2ebf25e8ed9819a22757d7 SHA-256: 4d2e1985a0eb72f5056a25140788349905f5ecc95804b3638d2cdf0f96d302bb
136 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. It also exhibits a PDF link farm heuristic, with many links pointing to Shopify domains, though one specific Shopify URL was confirmed benign. The document body contains urgency language and a visual download button lure, suggesting a social engineering attempt to trick the user into clicking the malicious link. The primary malicious IOC is the redirector URL.

Heuristics 5

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=mt6572+android+scatter+emmc+txt+free
    • http://files.joysassgrace.com/uploads/1/3/0/7/130738845/nenufisukokube.pdf
    • http://files.hendrygeosciences.com/uploads/1/3/0/7/130775983/640842ef1.pdf
    • http://files.breedingforthefuture.com/uploads/1/3/2/6/132681566/sutavumuz.pdf
    • http://files.righttaxes.ca/uploads/1/3/0/9/130969386/lomis.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mulobovapu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/66689816557.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/55864873889.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/22411539251.pdf
    • https://vupujejuwozo.files.wordpress.com/2020/06/butesigen.pdf
    • https://fopolodedusu984229541.files.wordpress.com/2020/07/fomijedarofekevedunamezos.pdf
    • https://supofelusipi.files.wordpress.com/2020/07/rinuzodipavakilamusas.pdf
    • https://vedusax.files.wordpress.com/2020/06/80825538199.pdf
    • https://cdn.shopify.com/s/files/1/0430/6649/1042/files/3547083377.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lejozusuxawunulimedobina.pdf
    • https://cdn.shopify.com/s/files/1/0430/7111/1330/files/jamalavekupefunisotapuje.pdf
    • https://cdn.shopify.com/s/files/1/0431/0702/5056/files/nafururugudibazefugejedab.pdf
    • https://cdn.shopify.com/s/files/1/0430/1537/2949/files/jimenuli.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/66048758492.pdf
    • https://cdn.shopify.com/s/files/1/0432/1991/0811/files/zagunawasudewusobugakutov.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_off00005e36.bin
f9d43d7200e951bd64013a71b174a4826c57a89e7c367eb8bc8e8995f81dd6ae		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E36 5488 bytes
font_01_sfnt_off000070d6.bin
d80c70415efeda0a53bb6d64a42240a6abd86408e8539aeb0c5d70c30a8d10f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70D6 10060 bytes

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