Malicious PDF — malware analysis report

Static analysis result for SHA-256 84ae64ebf4210408…

MALICIOUS

PDF

45.3 KB Created: 2020-08-15 05:15:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 804998774d78f1843d46d6bc6f34b45f SHA-1: 54a1a066d722af1239892de783bf0361b8d44140 SHA-256: 84ae64ebf4210408689a156b50c364e2eebc5a5b5fc63816505395a632d1fc49
128 Risk Score

Malware Insights

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

The PDF contains a link farm and a redirector to malicious infrastructure, specifically targeting users searching for Windows 7 activators. The document body, though heavily obfuscated, contains the URL https://ttraff.ru/pify?keyword=windows+7+genuine+activator+key+free, which is a critical finding. This indicates a likely attempt to deliver a second-stage payload or phish for credentials by luring the user to click on the malicious link.

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.ru/pify?keyword=windows+7+genuine+activator+key+free
    • http://files.roisinburns.com/uploads/1/3/0/8/130874284/2567570.pdf
    • http://tazusim.tailwaggintreats.net/uploads/1/3/0/7/130775373/kopuligipap.pdf
    • http://files.photographsbycarolmccullough.com/uploads/1/3/0/7/130739678/tosorufegujefe-mipozolexufu.pdf
    • http://tofanezen.trevormarsh.com/uploads/1/3/1/3/131383483/dibiwowamesuxamovuja.pdf
    • https://cdn.shopify.com/s/files/1/0437/1313/4757/files/8559884760.pdf
    • https://cdn.shopify.com/s/files/1/0432/0854/0324/files/crazy_train_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0437/6100/8791/files/foloko.pdf
    • https://cdn.shopify.com/s/files/1/0432/0726/2370/files/60430450552.pdf
    • https://cdn.shopify.com/s/files/1/0434/2956/0476/files/villagers_card_game_rules.pdf
    • https://cdn.shopify.com/s/files/1/0430/2585/8714/files/godurujirigisesotowawa.pdf
    • https://cdn.shopify.com/s/files/1/0431/3684/3933/files/aql_sampling_plan_table.pdf
    • https://cdn.shopify.com/s/files/1/0437/2611/0885/files/ninomewomaviwu.pdf
    • https://cdn.shopify.com/s/files/1/0438/4237/1741/files/diritasapotinijiviwixope.pdf
    • https://cdn.shopify.com/s/files/1/0432/6398/3769/files/tewitopoge.pdf
    • https://cdn.shopify.com/s/files/1/0444/2639/5814/files/define_probability_sampling.pdf
    • https://cdn.shopify.com/s/files/1/0437/6962/6781/files/bovaseg.pdf
    • https://cdn.shopify.com/s/files/1/0427/9356/6364/files/arlo_pro_2_manual.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_off00006359.bin
9b1f35f9f08f94a74c66a03787c8f02434402bc28071b0f1ba8ba41ceeb55881		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6359 5448 bytes
font_01_sfnt_off0000761a.bin
8c1a9373f42b80f4813c57652d2d35c4b256fdd5f02ebcbc52ca05dd6280237e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x761A 10444 bytes
font_02_sfnt_off000099d7.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x99D7 4324 bytes

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