Malicious PDF — malware analysis report

Static analysis result for SHA-256 35f14e80506cc63f…

MALICIOUS

PDF

58.5 KB Created: 2020-08-06 00:43:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 32e0d37ff79adc664c09cfeebd365247 SHA-1: 25f2dbcfdf394ac59f7f4b09d55caaa56c7dd78c SHA-256: 35f14e80506cc63f6473a6321a13350aeff46e8287f71746cd3f1f6acaa5302c
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=sociology+anthony+giddens+pdf+download'. It also exhibits characteristics of a PDF link farm, with numerous external links, including one to 'https://cdn.shopify.com/s/files/1/0437/5881/3341/files/assertiveness_training.pdf'. The document body, though partially corrupted, contains text related to academic downloads and the malicious URL, suggesting a lure for users seeking specific content.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=sociology+anthony+giddens+pdf+download
    • http://files.littlervrentals.com/uploads/1/3/1/1/131163590/5471008.pdf
    • http://files.cowboysupplyhouse.com/uploads/1/3/2/6/132695302/zuvufupozox.pdf
    • http://files.stmarysrcmiramichi.com/uploads/1/3/0/9/130969673/luvigofelagunirela.pdf
    • https://cdn.shopify.com/s/files/1/0437/5881/3341/files/assertiveness_training.pdf
    • https://cdn.shopify.com/s/files/1/0433/8683/0998/files/75593934151.pdf
    • https://cdn.shopify.com/s/files/1/0429/7415/0809/files/kejel.pdf
    • https://cdn.shopify.com/s/files/1/0438/0796/5341/files/oxford_english_dictionary_archive._org.pdf
    • https://cdn.shopify.com/s/files/1/0427/6604/1244/files/wevujiwopive.pdf
    • https://cdn.shopify.com/s/files/1/0430/3428/0099/files/dotovasuxowatesovuzodegin.pdf
    • https://cdn.shopify.com/s/files/1/0434/4433/8838/files/58131034512.pdf
    • https://cdn.shopify.com/s/files/1/0433/2450/6266/files/61176834019.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/43034806536.pdf
    • https://cdn.shopify.com/s/files/1/0430/0577/1939/files/69037213855.pdf
    • https://cdn.shopify.com/s/files/1/0433/5943/6951/files/tn_motorcycle_license_manual.pdf
    • https://cdn.shopify.com/s/files/1/0437/7185/5002/files/git_discard_all_changes.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/4077026649.pdf
    • https://cdn.shopify.com/s/files/1/0437/6893/8647/files/72062034400.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008323.bin
a923cab5b87c37da0f71ec2253c810dfd97172815d5be4bcd16d8ca09369e966		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8323 5404 bytes
font_01_sfnt_off00009583.bin
0b6d896b43c87f7f2e4c425e3be34537b40625ecc12fd3e74421d017025052c0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9583 10688 bytes
font_02_sfnt_off0000b951.bin
da133098c8ec00180ce5fe37c74b807b143adc5860869a2f7b6211e455203b10		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB951 16112 bytes
font_03_sfnt_off0000ce21.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCE21 4324 bytes

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