Malicious PDF — malware analysis report

Static analysis result for SHA-256 86fed89141feff91…

MALICIOUS

PDF

92.1 KB Created: 2020-08-07 18:57:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1d7dc19a297476227add439fbfeab7af SHA-1: 99589618c3d7ee5d9084ee5bb65166294749bdbb SHA-256: 86fed89141feff910ecf01a51d88371cf6f8ed30e07cc5d44eb5d0d50daae311
128 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.ru'. The document body, though heavily obfuscated, contains text related to 'Al quran with urdu translation in pdf format' and the malicious URL, suggesting a lure. The PDF also contains a mass external PDF link farm, with the dominant host being 'cdn.shopify.com', indicating a potential SEO poisoning or link distribution tactic. The presence of a download button heuristic further supports the lure-based attack pattern.

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=al+quran+with+urdu+translation+in+pdf+format
    • http://files.marcodim.com/uploads/1/3/0/7/130776644/jegetati.pdf
    • http://files.futureleaforganics.com/uploads/1/3/0/7/130775174/51a4d5fbda60.pdf
    • http://files.mountaineerauctions.com/uploads/1/3/2/8/132814239/5ff98.pdf
    • https://cdn.shopify.com/s/files/1/0436/2089/2834/files/cracked_fl_studio.pdf
    • https://cdn.shopify.com/s/files/1/0437/7182/2229/files/38169599557.pdf
    • https://cdn.shopify.com/s/files/1/0430/9496/6436/files/siguvifudow.pdf
    • https://cdn.shopify.com/s/files/1/0429/7801/7443/files/faduwofesoderuf.pdf
    • https://cdn.shopify.com/s/files/1/0430/8484/1124/files/viravisuxepanax.pdf
    • https://cdn.shopify.com/s/files/1/0429/4891/9450/files/vixubitanub.pdf
    • https://cdn.shopify.com/s/files/1/0439/9936/3222/files/99042218939.pdf
    • https://cdn.shopify.com/s/files/1/0428/1086/7871/files/wibasaletoxemajizedu.pdf
    • https://cdn.shopify.com/s/files/1/0432/8597/1112/files/vopimotewe.pdf
    • https://cdn.shopify.com/s/files/1/0429/6415/6575/files/33581320445.pdf
    • https://cdn.shopify.com/s/files/1/0433/2273/6798/files/59664168429.pdf
    • https://cdn.shopify.com/s/files/1/0432/3105/1943/files/rigiganopiw.pdf
    • https://cdn.shopify.com/s/files/1/0434/4587/8941/files/pulijudirosol.pdf
    • https://cdn.shopify.com/s/files/1/0431/9241/8468/files/zakojorifir.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_007_off0001259e.bin
d9b863d37272fc7c6bc282e5637cd27142e726dc023509b4a206f7157e3e6618		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x1259E 26480 bytes
font_00_sfnt_off0000e52d.bin
a9ad9ad0a96fe26ac6797df49b1e626b392e9366165fda36ca18888fb22e3261		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE52D 1636 bytes
font_01_sfnt_off0000ed6b.bin
ec4eba6ff5df0fbef4b981af78223984fd0628904b1517f04faf10205f7cae8f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xED6B 5252 bytes
font_02_sfnt_off0000ff1b.bin
e70d7f2367880a1b495f402adb9c8d0d57e885dda5d93f1ad7afbba3002ae2e0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFF1B 11176 bytes
font_04_sfnt_off000153b6.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x153B6 4324 bytes

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