Malicious PDF — malware analysis report

Static analysis result for SHA-256 e871123424ba40c5…

MALICIOUS

PDF

34.4 KB Created: 2020-08-27 19:22:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 11f3e6da17ccba606b446980464ca297 SHA-1: 2a945c99fc2bc764c900748878d8193fed3e7f2f SHA-256: e871123424ba40c5692efbdcbcb3e67cd61bcc3b89cedf5d2f3dd3afd9b75d48
140 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, many pointing to Shopify domains hosting other PDFs, indicative of a link farm or SEO abuse. One critical heuristic identified a link to known malicious redirector infrastructure at `ttraff.com`. Another heuristic suggests a callback phishing lure, where the document might prompt the user to call a number for a fake support or billing issue. The presence of numerous links and the redirector strongly suggest a malicious intent to lead the user to harmful content or phishing sites.

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/pify?keyword=pacific+highlands+ranch+new+homes+san+diego
    • http://files.school.stmatthewspokane.org/uploads/1/3/1/4/131407802/3165068.pdf
    • http://files.ariseaddictionrecovery.com/uploads/1/3/0/7/130776828/kixur-ririxegifux-xorat.pdf
    • http://files.emerging-talents.net/uploads/1/3/1/4/131408899/zuzekafewij.pdf
    • http://files.hydroshockgrafix.com/uploads/1/3/0/7/130738701/2212634.pdf
    • https://cdn.shopify.com/s/files/1/0433/7795/0870/files/konufapopax.pdf
    • https://cdn.shopify.com/s/files/1/0432/4245/5195/files/91034731147.pdf
    • https://cdn.shopify.com/s/files/1/0436/1856/6306/files/86491615999.pdf
    • https://cdn.shopify.com/s/files/1/0430/0128/2711/files/lefomexufe.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/taselalodomojobuda.pdf
    • https://cdn.shopify.com/s/files/1/0430/3031/5159/files/65010933797.pdf
    • https://cdn.shopify.com/s/files/1/0437/1460/9305/files/armitron_pro_sport_watch_wr330ft_manual.pdf
    • https://cdn.shopify.com/s/files/1/0448/7793/8855/files/english_encyclopedia_free_download.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_off000046f1.bin
3e5d244882ab73be3a465a333b7906d5a79861ac8893697cef64c9dd46534d9c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x46F1 5528 bytes
font_01_sfnt_off0000599b.bin
fc44a6292353bb215f0db41d84ac9d6697d57be66c0d1acda8f9e47d3013fc8a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x599B 10372 bytes

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