Malicious PDF — malware analysis report

Static analysis result for SHA-256 e758c57212987d50…

MALICIOUS

PDF

49.6 KB Created: 2020-08-22 11:38:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bad3fe1124791287fe704e24bc392f81 SHA-1: 9ea85b29cd6e3b68831bab3d37130f2560b1b6c1 SHA-256: e758c57212987d50456a432c9bc9935c39227744fe03b598c1c98b45706d7cfe
128 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=hotel+booking+form+html+code'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on cdn.shopify.com, but some pointing to potentially malicious domains like 'pewesu.rivercliffestates.com' and 'dijokix.nhvfd18.org'. The document body, though heavily obfuscated, contains the same malicious URL, reinforcing the lure. The presence of a 'download button' heuristic further supports the malicious intent of directing users to external 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=hotel+booking+form+html+code
    • http://pewesu.rivercliffestates.com/uploads/1/3/2/6/132695569/fbacf0affe.pdf
    • http://dijokix.nhvfd18.org/uploads/1/3/0/7/130739595/pewukewuxenamuv_tiwad_tuwudoguzolol_mopab.pdf
    • https://cdn.shopify.com/s/files/1/0431/4392/1820/files/84083799808.pdf
    • https://cdn.shopify.com/s/files/1/0438/3490/0637/files/nidalepafegibofin.pdf
    • https://cdn.shopify.com/s/files/1/0430/0544/4259/files/40058555823.pdf
    • https://cdn.shopify.com/s/files/1/0430/3486/9921/files/foxit_reader_free_download_full_version_with_crack.pdf
    • https://cdn.shopify.com/s/files/1/0437/7611/4837/files/78163720418.pdf
    • https://cdn.shopify.com/s/files/1/0434/4430/6086/files/35879568375.pdf
    • https://cdn.shopify.com/s/files/1/0432/3845/7501/files/72740938608.pdf
    • https://cdn.shopify.com/s/files/1/0433/5435/7915/files/portfolio_lighting_manuals.pdf
    • https://cdn.shopify.com/s/files/1/0428/6126/5062/files/29037816350.pdf
    • https://cdn.shopify.com/s/files/1/0430/5072/9634/files/tofexotuzedazobozifugoko.pdf
    • https://cdn.shopify.com/s/files/1/0430/9948/8410/files/algorithmic_problem_solving_backhouse.pdf
    • https://cdn.shopify.com/s/files/1/0432/4936/9252/files/10540692043.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006a6f.bin
f9100b2b6ceaf175b2a04991d4c692fc1594d01ec804850ac1ffc23169f4a099
pdf-font-stream PDF embedded font (sfnt) at offset 0x6A6F 5000 bytes
font_01_sfnt_off00007b3f.bin
74b86c45b69a773551e04484b02d9c6d1ea5501bc58ec0b34434d6d86f103de3
pdf-font-stream PDF embedded font (sfnt) at offset 0x7B3F 15752 bytes
font_02_sfnt_off0000ab99.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361
pdf-font-stream PDF embedded font (sfnt) at offset 0xAB99 4324 bytes