Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e92076ace8d6aef…

MALICIOUS

PDF

49.8 KB Created: 2020-08-07 21:11:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 590df49c77178d85c33da5117f867775 SHA-1: 1198fda8ab64b5594d096dd95a7c5d790341fd09 SHA-256: 3e92076ace8d6aef53678f2b01b5ea69ad5d42706b772e038adea16a100bd1d7
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 Shopify and appear to be SEO-optimized lures. One prominent link redirects through 'ttraff.com', a known malicious redirector, to a PDF file. The document body contains obfuscated text and the malicious URL, suggesting the intent is to lead the user to malicious content via a deceptive link.

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=benign+prostatic+hyperplasia+pdf+adalah
    • http://files.lister-hosedoctor.com/uploads/1/3/0/7/130739674/buzexo.pdf
    • http://files.nelsonmota.com/uploads/1/3/1/4/131412032/5611831.pdf
    • http://sejep.fullcircleteaching.com/uploads/1/3/1/0/131071164/4397244.pdf
    • http://files.splitlevel.studio/uploads/1/3/1/4/131453712/niwodadoritojunoza.pdf
    • http://files.jeansguangzhou.com/uploads/1/3/0/7/130776031/lejesatego-munixinisegixob-tidobanowi-jokuwijug.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kexuxedixu.pdf
    • https://cdn.shopify.com/s/files/1/0429/5891/3689/files/53732234577.pdf
    • https://cdn.shopify.com/s/files/1/0427/4647/8759/files/37463157002.pdf
    • https://cdn.shopify.com/s/files/1/0428/7958/2374/files/the_programmers_idea_book.pdf
    • https://cdn.shopify.com/s/files/1/0432/1322/6139/files/jelivulogare.pdf
    • https://cdn.shopify.com/s/files/1/0429/8535/7463/files/vazimaxidukugizo.pdf
    • https://cdn.shopify.com/s/files/1/0437/8876/3298/files/carolyne_faulkner_the_signs.pdf
    • https://cdn.shopify.com/s/files/1/0437/5845/2897/files/vmware_workstation_15_key.pdf
    • https://cdn.shopify.com/s/files/1/0430/7383/1072/files/duzuwinikifibejawazipefiv.pdf
    • https://cdn.shopify.com/s/files/1/0435/6921/7699/files/pdf2word_change_to_word_online_free.pdf
    • https://cdn.shopify.com/s/files/1/0437/8276/6750/files/oncologia_significado.pdf
    • https://cdn.shopify.com/s/files/1/0434/4859/8678/files/xozuzasur.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_off00007444.bin
969aa739f34d2f6aa927a84d9ac17163dd81cf70e4624edb9f9b68669188a440		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7444 5568 bytes
font_01_sfnt_off0000873d.bin
af25f66cff5d116ddaf1e491cb8dbd8f8d6fa16ab0e4642e3a1c55745e785838		 pdf-font-stream PDF embedded font (sfnt) at offset 0x873D 18388 bytes

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