Malicious PDF — malware analysis report

Static analysis result for SHA-256 8db94462f5739ca1…

MALICIOUS

PDF

37.6 KB Created: 2020-09-05 16:19:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6e3bf11e6a48c9eeab93bdc3958a6e85 SHA-1: 0629ed3117aabc9a7c2ac272d689094cafd99171 SHA-256: 8db94462f5739ca1a442ddd1c577f4a151094e49e25815a5b1a94d11e84cbb02
128 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link and a link farm, indicating an attempt to lure users to malicious infrastructure. The presence of a 'download button' lure reinforces this. The document body contains garbled text but includes the malicious URL and several benign Shopify URLs, suggesting a SEO-based lure to drive traffic to the malicious redirector.

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.club/pify?keyword=nsep+2018+answer+key+resonance
    • https://cdn.shopify.com/s/files/1/0434/5079/4145/files/75847678102.pdf
    • https://cdn.shopify.com/s/files/1/0432/8810/1030/files/61656481169.pdf
    • https://cdn.shopify.com/s/files/1/0434/0652/4583/files/column_chromatography_techniques.pdf
    • https://cdn.shopify.com/s/files/1/0462/1795/3433/files/asphalt_9_legends_gameplay_android.pdf
    • https://cdn.shopify.com/s/files/1/0433/6300/8661/files/40022918674.pdf
    • https://cdn.shopify.com/s/files/1/0433/7818/0261/files/how_to_change_minecraft_username_2017.pdf
    • https://cdn.shopify.com/s/files/1/0435/2190/0696/files/poraresisanewofelexivigen.pdf
    • https://cdn.shopify.com/s/files/1/0448/9651/8299/files/baidyanath_ayurvedic_medicine_list.pdf
    • https://cdn.shopify.com/s/files/1/0432/4930/3720/files/mazedepuvozipesexisekepit.pdf
    • https://static.usrfiles.com/ugd/b7ed05_4b86897daa4348809e9706f6ea02d1eb.pdf
    • https://static.usrfiles.com/ugd/4cf28d_ac8396f8914242ae97237af4918e3082.pdf
    • https://static.usrfiles.com/ugd/48f461_4ac36d11ec9d4ff2be870affadd0d005.pdf
    • https://static.usrfiles.com/ugd/b8c837_3cc6f02fb8b14d88ac3c5a7bb30b2a08.pdf
    • https://cdn.shopify.com/s/files/1/0431/3874/4469/files/83472546474.pdf
    • https://cdn.shopify.com/s/files/1/0437/8935/3118/files/44372291904.pdf
    • https://cdn.shopify.com/s/files/1/0434/1940/2405/files/45493699007.pdf
    • https://cdn.shopify.com/s/files/1/0438/2189/1746/files/minecraft_weapon_mods.pdf
    • https://cdn.shopify.com/s/files/1/0437/7152/7325/files/sigutovogek.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_off000048c3.bin
87d91acb11bebd106369257e1363938028a904f807edec90de2bd4a716cdcc70
pdf-font-stream PDF embedded font (sfnt) at offset 0x48C3 5304 bytes
font_01_sfnt_off00005adc.bin
ed98b7f24abeae68c9f591a7a3ba2416b3d72c50a96960a5dc2ff5ac9a5dba0f
pdf-font-stream PDF embedded font (sfnt) at offset 0x5ADC 9468 bytes
font_02_sfnt_off00007b50.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e
pdf-font-stream PDF embedded font (sfnt) at offset 0x7B50 4324 bytes