Malicious PDF — malware analysis report

Static analysis result for SHA-256 b8b57e179bbe42de…

MALICIOUS

PDF

53.7 KB Created: 2020-08-08 01:27:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 675554afd4cf4b20cbe59fe5dc5f3aa2 SHA-1: 78a0471ef03ef4b87278d818844a21370042c75b SHA-256: b8b57e179bbe42de1649ef11082463392fd4a33bed9b7f4810f9de005874a511
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many of which are hosted on seemingly benign domains but are likely part of a link farm designed to obscure malicious redirectors. One critical heuristic identified a direct link to a known malicious redirector at https://ttraff.cc/pify?keyword=canon+5d+mark+iii+tutorial+pdf. The document body, though heavily obfuscated, contains references to the Canon 5D Mark III tutorial PDF and the malicious redirector URL, reinforcing the lure.

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.cc/pify?keyword=canon+5d+mark+iii+tutorial+pdf
    • http://files.superaggressivereviews.com/uploads/1/3/2/6/132682585/jamadokag-vabeferewoxawag-nofaj.pdf
    • http://files.sligocitychurch.com/uploads/1/3/0/7/130739369/kevamimugorafuz_vamofitozax_suwiratexerek_firop.pdf
    • http://files.parentspeace.com/uploads/1/3/2/6/132695602/5debe488.pdf
    • http://files.adelaidehulahoopers.com.au/uploads/1/3/1/4/131408017/rusizunup.pdf
    • http://tarakib.menasci.net/uploads/1/3/0/9/130969744/sabenerarowi-goxit.pdf
    • https://cdn.shopify.com/s/files/1/0436/2944/5273/files/physiotherapy_exercises_for_ankylosing_spondylitis.pdf
    • https://cdn.shopify.com/s/files/1/0431/7813/1611/files/lagefifamuverepazuwifewe.pdf
    • https://cdn.shopify.com/s/files/1/0433/2906/1014/files/lerimisidatarevexagawi.pdf
    • https://cdn.shopify.com/s/files/1/0435/0397/6614/files/gexujoderagom.pdf
    • https://cdn.shopify.com/s/files/1/0434/0957/1990/files/folufirevulawomefupi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/66689816557.pdf
    • https://cdn.shopify.com/s/files/1/0431/5276/9192/files/66094806276.pdf
    • https://cdn.shopify.com/s/files/1/0430/8297/3346/files/22115642716.pdf
    • https://cdn.shopify.com/s/files/1/0434/4469/9288/files/analytic_phonics.pdf
    • https://cdn.shopify.com/s/files/1/0430/3205/1873/files/nigovumusaxarudisoru.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_off0000939a.bin
a9dcabcd88c28dd44cf08297e562e1a1ebca362be408c7121b6508ede6bfefc6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x939A 5104 bytes
font_01_sfnt_off0000a4e7.bin
f549a7446f900893c6a9c264f261f5a2e27960b615be2def1655a45133c7bd4d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA4E7 10900 bytes

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