Malicious PDF — malware analysis report

Static analysis result for SHA-256 59ccbfe6a33e7343…

MALICIOUS

PDF

39.7 KB Created: 2020-09-07 03:50:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0221e72cd01dfd503c12537c4d6aeab4 SHA-1: 29adaf97e3dae8fa00d51512c820d577cf5c8ca9 SHA-256: 59ccbfe6a33e734339785158e39759c723e98170cec253e01588fb06111aab4c
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=charlie+puth+song++how+long'. This indicates the document's primary purpose is to redirect users to malicious infrastructure. The presence of a mass external PDF link farm further supports the malicious intent, likely for SEO poisoning or traffic generation. No scripts were extracted, but the embedded URL is sufficient to classify the attack pattern.

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.cc/pify?keyword=charlie+puth+song++how+long
    • https://cdn.shopify.com/s/files/1/0437/5393/0904/files/create_crystal_report_asp._net_c.pdf
    • https://cdn.shopify.com/s/files/1/0429/6825/2565/files/tusefabaxob.pdf
    • https://cdn.shopify.com/s/files/1/0433/1051/4334/files/disney_descendants_3_soundtrack_zip.pdf
    • https://cdn.shopify.com/s/files/1/0431/9235/2928/files/alimentos_transgenicos_en_bolivia.pdf
    • https://cdn.shopify.com/s/files/1/0434/7189/6736/files/appsense_citrix.pdf
    • https://cdn.shopify.com/s/files/1/0465/0473/8966/files/card_sorting_exercise_information_architecture.pdf
    • https://cdn.shopify.com/s/files/1/0433/5638/9528/files/90967936079.pdf
    • https://cdn.shopify.com/s/files/1/0430/6301/7629/files/duzuvobesawikitipe.pdf
    • https://cdn.shopify.com/s/files/1/0429/8525/9159/files/tixowujenifuvil.pdf
    • https://static.usrfiles.com/ugd/e33828_406536e7483f4d278cc23cd357deef81.pdf
    • https://static.usrfiles.com/ugd/7f5dc5_23ef4db2a33d4393b92f418f52125b1d.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_off00005d76.bin
f3032599102fe27e86dc07fcc935a5987e9a82fd4b33dca478a1e4acbb02689c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D76 5076 bytes
font_01_sfnt_off00006ebc.bin
3b539db4a959dcf3ca6aeb2b054a76cffe47a6b57dccef7bd695c1aa7f316eed		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EBC 10436 bytes

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