Malicious PDF — malware analysis report

Static analysis result for SHA-256 48a07bbc9d84b68a…

MALICIOUS

PDF

141.6 KB Created: 2020-08-27 15:06:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 98facc13584c2259b12c03091605b505 SHA-1: f63f7621bedfed31ab3f2bcf7a511fc6d06c90cd SHA-256: 48a07bbc9d84b68a2dc51459f9c3b582e7a0933bbe115ed996d30b2bb132e865
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=1939+plymouth+truck+parts'. Additionally, it exhibits a PDF link farm behavior, embedding numerous external links, with the first being 'https://cdn.shopify.com/s/files/1/0430/0167/5939/files/tanopo.pdf'. The ML classifier also flagged this PDF with high confidence. The document body appears to be heavily obfuscated or corrupted, but the presence of the URL and the link farm heuristic strongly suggest a phishing or redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.com/pify?keyword=1939+plymouth+truck+parts
    • http://lologom.sleepingbunniesbabycoach.com/uploads/1/3/0/8/130874012/delofofex_fatutofisisunu.pdf
    • http://files.amyforsyth.com/uploads/1/3/2/8/132814680/vazavitukuw.pdf
    • http://files.rawlinsmusic.co.uk/uploads/1/3/2/8/132814906/sajodomavatukoxaj.pdf
    • http://makepinu.beyondthegameplan.com/uploads/1/3/0/7/130775429/cb51fd0abf7d.pdf
    • https://cdn.shopify.com/s/files/1/0430/0167/5939/files/tanopo.pdf
    • https://cdn.shopify.com/s/files/1/0434/5259/6374/files/8878654226.pdf
    • https://cdn.shopify.com/s/files/1/0434/2412/0988/files/14490551678.pdf
    • https://cdn.shopify.com/s/files/1/0433/5108/1114/files/astrology_books_in_tamil.pdf
    • https://cdn.shopify.com/s/files/1/0429/7241/4106/files/azerbaycan_xeritesi_oyunu.pdf
    • https://cdn.shopify.com/s/files/1/0433/3862/9270/files/yowhatsapp_new_version_8._0.pdf
    • https://cdn.shopify.com/s/files/1/0440/6735/6824/files/2704230253.pdf
    • https://cdn.shopify.com/s/files/1/0435/7623/0046/files/rag_and_bone_sample_sale.pdf
    • https://cdn.shopify.com/s/files/1/0466/3869/4565/files/cambridge_ielts_11_general_training.pdf
    • https://cdn.shopify.com/s/files/1/0433/9436/7649/files/gofiluxesotep.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_off0001e261.bin
863cbe91c8e48c0052421efbe2447e3f2e662b47246ab29c4efd55eb8667219c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1E261 5616 bytes
font_01_sfnt_off0001f55a.bin
9511782705dd51b06fbec28e3b0494e80c9e82b133244f9e9fad6202a2329088		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1F55A 17084 bytes

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