Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f86dabe67dd1308…

MALICIOUS

PDF

51.2 KB Created: 2020-07-21 02:52:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1de12b5fcf4a2e484d3c79ed8aebc31f SHA-1: ce37083321d3a62d29639e8a356d0549fc3aab17 SHA-256: 7f86dabe67dd130822fd1f283fee9832eebfcaeee99c72567a53ded297d29628
140 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'. Additionally, it exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on Shopify. One heuristic also indicates a callback phishing lure, suggesting the document might prompt the user to call a phone number. The embedded document body is heavily obfuscated and unreadable, but the presence of 'Directv choice package channel lineup pdf' suggests a lure to entice users to click the malicious link.

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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/wb?keyword=directv%20choice%20package%20channel%20lineup%20pdf
    • http://files.kirkbeeler.com/uploads/1/3/1/3/131381706/zevalisigo.pdf
    • http://files.carsontidwell.com/uploads/1/3/1/4/131438249/mumiv.pdf
    • http://files.gehan-lab.org/uploads/1/3/1/8/131872017/1464074.pdf
    • http://files.gehan-lab.org/uploads/1/3/1/8/131872017/1464074.pd
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/37357510366.pdf
    • https://cdn.shopify.com/s/files/1/0430/3349/3658/files/viwibigixebimigi.pdf
    • https://cdn.shopify.com/s/files/1/0431/7514/9719/files/pinokumipevogokos.pdf
    • https://cdn.shopify.com/s/files/1/0430/0944/1953/files/8325170575.pdf
    • https://cdn.shopify.com/s/files/1/0436/4160/2198/files/71452470999.pdf
    • https://valolil.files.wordpress.com/2020/06/revoxorore.pdf
    • https://rugemafo.files.wordpress.com/2020/07/64972321233.pdf
    • https://binixuved.files.wordpress.com/2020/07/rufutelevi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sexewagufik.pdf
    • https://cdn.shopify.com/s/files/1/0428/7270/1095/files/tomaravemazinawopijeviri.pdf
    • https://cdn.shopify.com/s/files/1/0434/7111/0308/files/xavodufi.pdf
    • https://cdn.shopify.com/s/files/1/0429/1703/6198/files/36803161695.pdf
    • https://cdn.shopify.com/s/files/1/0433/3427/1126/files/31674178568.pdf
    • https://cdn.shopify.com/s/files/1/0432/6676/9051/files/80625601339.pdf
    • https://cdn.shopify.com/s/files/1/0428/2492/5347/files/tevanujofixosobijopafur.pdf
    • https://cdn.shopify.com/s/files/1/0430/2117/2897/files/41439733483.pdf
    • https://cdn.shopify.com/s/files/1/0427/9032/2342/files/79690395837.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_off00007db6.bin
2b9625b8957f5580576fd3ee2827e50df34907ca606921e92830d87d264982ed		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DB6 5244 bytes
font_01_sfnt_off00008f8a.bin
ae4cbc2ef355e10c0ea0d4b0e84f7311e22b80cfd1712ea3bc013ae3777d58d9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F8A 14940 bytes

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