Malicious PDF — malware analysis report

Static analysis result for SHA-256 929864f5609f8c29…

MALICIOUS

PDF

44.8 KB Created: 2020-08-13 22:21:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 52010202e3709973468dd61a2b38a0f0 SHA-1: 2c101c1b90afa8be9ae5567ac6443e62a1f51554 SHA-256: 929864f5609f8c29ee22bbda3f6b2224cc509ee568bd8a2abb99a40d24754742
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, identified as a PDF link farm. One of these links, 'https://ttraff.ru/pify?keyword=catholic+youth+bible+study+guide', is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting it is the primary lure. The presence of numerous Shopify-hosted PDF links indicates a potential SEO manipulation or content hosting strategy for malicious purposes.

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=catholic+youth+bible+study+guide
    • http://files.jessicanye.com/uploads/1/3/1/3/131379060/6671690.pdf
    • http://varepu.motherswhimsy.com/uploads/1/3/1/4/131407164/9628947.pdf
    • http://files.christaniehunterart.com/uploads/1/3/0/7/130739081/1138638.pdf
    • https://cdn.shopify.com/s/files/1/0434/0934/2621/files/bank_po_syllabus_2020.pdf
    • https://cdn.shopify.com/s/files/1/0437/7165/8392/files/fubimifasegetazax.pdf
    • https://cdn.shopify.com/s/files/1/0428/3092/1895/files/funid.pdf
    • https://cdn.shopify.com/s/files/1/0431/0263/4148/files/18137738599.pdf
    • https://cdn.shopify.com/s/files/1/0437/8863/2213/files/a_first_course_in_abstract_algebra_fraleigh_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0438/3647/3501/files/snapchat_password_hack.pdf
    • https://cdn.shopify.com/s/files/1/0428/0123/4076/files/40720942288.pdf
    • https://cdn.shopify.com/s/files/1/0432/1673/2320/files/13806541020.pdf
    • https://cdn.shopify.com/s/files/1/0434/1248/8343/files/14943578416.pdf
    • https://cdn.shopify.com/s/files/1/0428/4642/1158/files/venkatesa_suprabhatam.pdf
    • https://cdn.shopify.com/s/files/1/0434/0029/8648/files/gaponogixonesovotutibe.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/ziduvawijixivobufanevi.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_off000071f1.bin
c5fdfe0ce0136ad246de8d8f0ef13f7594b237d42beee5e597b0c8165d61ec86		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71F1 5252 bytes
font_01_sfnt_off000083c7.bin
a19af91c79b0341478ec984577a660883c0304346d782380932868398e977ff6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x83C7 10236 bytes

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