Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d00309bf560e561…

MALICIOUS

PDF

99.7 KB Created: 2020-08-10 03:24:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bc716a06e5598bc3fd2ae9a01fe7fc45 SHA-1: 3a45a1aa2d10bc7d18f977c32b36ca63f6e7202e SHA-256: 9d00309bf560e5617970c6649ad03149c81e6710930ae09960a187a3b8dbf875
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically 'https://ttraff.cc/pify?keyword=birds+name+in+english+pdf'. This indicates the document's primary purpose is to redirect users to malicious sites. The presence of a large number of external PDF links, many pointing to potentially untrusted domains, further supports a malicious intent, likely for SEO poisoning or traffic generation to malicious infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 3

  • 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.
  • 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=birds+name+in+english+pdf
    • http://files.nejnamc.org/uploads/1/3/1/6/131607346/bujowadatasivo.pdf
    • http://fapetof.laboroflovesingapore.com/uploads/1/3/2/8/132814930/016e6acd4159.pdf
    • http://files.giveinfulltoday.org/uploads/1/3/2/7/132740502/8584472.pdf
    • http://files.ocscc953.ca/uploads/1/3/1/6/131607310/rededoxukupipudowek.pdf
    • https://cdn.shopify.com/s/files/1/0431/3550/0439/files/rei_s_minimap_1._6._4.pdf
    • https://cdn.shopify.com/s/files/1/0434/1540/4695/files/lodabewomuf.pdf
    • https://cdn.shopify.com/s/files/1/0428/2921/7958/files/2002_pontiac_grand_am_repair_manual.pdf
    • https://cdn.shopify.com/s/files/1/0437/4292/0869/files/fufuf.pdf
    • https://cdn.shopify.com/s/files/1/0429/7952/4759/files/how_to_play_multiplayer_on_minecraft.pdf
    • https://cdn.shopify.com/s/files/1/0431/2757/0596/files/windows_8._1_pro_x64_activated.pdf
    • https://cdn.shopify.com/s/files/1/0435/1646/1211/files/wexorizupexajagujori.pdf
    • https://cdn.shopify.com/s/files/1/0430/9575/2864/files/52727565939.pdf
    • https://cdn.shopify.com/s/files/1/0437/2099/9064/files/laramifijusubid.pdf
    • https://cdn.shopify.com/s/files/1/0430/3103/6053/files/kibirudoxo.pdf
    • https://cdn.shopify.com/s/files/1/0432/9717/7768/files/7937672917.pdf
    • https://cdn.shopify.com/s/files/1/0432/2341/6987/files/5768127571.pdf
    • https://cdn.shopify.com/s/files/1/0454/5501/6088/files/weissbluth_atoms_and_molecules.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 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off0000ce34.bin
c06deccba8dcb6064e64e325173bd22ee7b3b452ea8fc144ce77857da3ba21f0		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0xCE34 12860 bytes
stream_007_off00010921.bin
f1f96b56b9eea9c9f1ffd55d72a0d1472b220d9082974a8a26a3f9412fa8357f		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x10921 16896 bytes
font_00_sfnt_off0000bbad.bin
0f1a4d216480c566de4f6aff7bcb34d64abf9582ca34bbae220aa72f244dbb59		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBBAD 5504 bytes
font_02_sfnt_off0000ed62.bin
fe48a829025244b922409e88413eb41cfdf8b11ab898a965931981858a85bdce		 pdf-font-stream PDF embedded font (sfnt) at offset 0xED62 8584 bytes
font_04_sfnt_off00012eb4.bin
191e49e2815ec8c890d3f77fbf73fb606ca171b27d7adf329c84ee93cfb614c0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12EB4 17324 bytes
font_05_sfnt_off000161b0.bin
9dc116b722c38d96c3b41883522b871d697dc9c5844e4a1217a53dcfc08c9fe8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x161B0 9296 bytes

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