Malicious PDF — malware analysis report

Static analysis result for SHA-256 29612522dd52ee92…

MALICIOUS

PDF

42.1 KB Created: 2020-08-31 23:17:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3b27f90bbdddf4ea272800dcc39e91bc SHA-1: 5f73578f0b5ceef520f8a059bc5fe59e3ee51421 SHA-256: 29612522dd52ee92420c40d06f65db7e80e1d8ffd86c3a8c2a8ed46e492cdce6
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/wix?keyword=iowa+class+a+cdl+study+guide'. This URL is presented within the document body, disguised as a study guide. The file also contains a large number of embedded links, many of which point to Shopify domains, suggesting a link farm or SEO manipulation tactic. The primary malicious IOC is the redirector URL.

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/wix?keyword=iowa+class+a+cdl+study+guide
    • https://static.usrfiles.com/ugd/e4a001_1b7a995cab6d43bcb7467ecb785be1b5.pdf
    • https://static.usrfiles.com/ugd/ac51ce_7703013a05854d348b3c53b3caf83451.pdf
    • https://static.usrfiles.com/ugd/b8c837_29b7b00f22784d17b0900dcefed3238d.pdf
    • https://cdn.shopify.com/s/files/1/0437/2814/2485/files/template_class_c_constructor.pdf
    • https://cdn.shopify.com/s/files/1/0434/0252/6872/files/bododarotiwagisu.pdf
    • https://cdn.shopify.com/s/files/1/0435/5509/4689/files/80743534356.pdf
    • https://cdn.shopify.com/s/files/1/0432/8158/0200/files/norefutotifew.pdf
    • https://cdn.shopify.com/s/files/1/0433/5419/4085/files/kuninoroxe.pdf
    • https://cdn.shopify.com/s/files/1/0428/1230/9671/files/godsmack_i_stand_alone_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0440/2076/0741/files/ruvibuvovuvisodajopojus.pdf
    • https://cdn.shopify.com/s/files/1/0432/1653/5720/files/flash_player_filehippo.pdf
    • https://cdn.shopify.com/s/files/1/0431/6587/6378/files/10th_class_maths_notes_karachi_board.pdf
    • https://cdn.shopify.com/s/files/1/0437/4098/7543/files/tiwupigavomojakok.pdf
    • https://cdn.shopify.com/s/files/1/0431/1826/4469/files/bobakozojeguxefezufe.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_off000064b2.bin
eeba363b73c482cccfe67e865989176a7a94f6cd5b7ffa7eac33138ed7028726		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64B2 5144 bytes
font_01_sfnt_off00007661.bin
69807586afb451351ec8fff181cee0d4c433a927f5e1a3d23204dcf60a50f6b9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7661 10964 bytes

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