Malicious PDF — malware analysis report

Static analysis result for SHA-256 e759542483ac613c…

MALICIOUS

PDF

44.4 KB Created: 2020-08-14 03:53:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 258b818c781c7f9a8a0d26019005c25b SHA-1: 8a76f0ab46ad90fb5ae50450c5a4bac1cab4b57c SHA-256: e759542483ac613c4f061b27ee370f60b3ece7f2ba620c3cd54ec26247f8cc2d
130 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, pointing to 'ttraff.com'. Additionally, it exhibits a PDF link farm heuristic, with numerous links hosted on cdn.shopify.com, one of which is also listed as an IOC. The document body, though heavily obfuscated, contains a visible URL that matches the malicious redirector. The presence of a download button lure further supports the malicious intent of redirecting the user to potentially harmful 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.com/pify?keyword=outward+challan+format+in+word
    • http://files.fineartbypatty.com/uploads/1/3/0/7/130776489/e8a67192841.pdf
    • http://files.rootdown-riseup.org/uploads/1/3/1/8/131871705/memuporutowul_mapabileduf_gexuse_bulapowenolovor.pdf
    • http://files.tiffanyshocklee.com/uploads/1/3/2/6/132682134/fikuxen-barifegax-saxurafe.pdf
    • http://tawivaje.noho-mowo.com/uploads/1/3/2/6/132681333/594dbb58.pdf
    • https://cdn.shopify.com/s/files/1/0437/2611/0885/files/latitudes_1_a1_a2_cahier_d_exercices.pdf
    • https://cdn.shopify.com/s/files/1/0433/2286/7880/files/41913747942.pdf
    • https://cdn.shopify.com/s/files/1/0431/0574/7095/files/53101864241.pdf
    • https://cdn.shopify.com/s/files/1/0437/7454/1981/files/apache_tomcat_server_administration_guide.pdf
    • https://cdn.shopify.com/s/files/1/0432/4474/8950/files/tutawim.pdf
    • https://cdn.shopify.com/s/files/1/0434/5046/6471/files/best_english_learning_book.pdf
    • https://cdn.shopify.com/s/files/1/0439/5322/5883/files/capitalization_and_punctuation_worksheets_5th_grade.pdf
    • https://cdn.shopify.com/s/files/1/0431/9592/4640/files/76302772330.pdf
    • https://cdn.shopify.com/s/files/1/0433/6638/3768/files/dodiguwigegij.pdf
    • https://cdn.shopify.com/s/files/1/0428/6873/6166/files/65519908616.pdf
    • https://cdn.shopify.com/s/files/1/0431/8098/2436/files/adobe_illustrator_crack_with_activation_key.pdf
    • https://cdn.shopify.com/s/files/1/0429/7441/2949/files/sports_vocabulary_test.pdf
    • https://cdn.shopify.com/s/files/1/0428/5808/6559/files/46831669701.pdf
    • https://cdn.shopify.com/s/files/1/0430/6924/3553/files/91558850563.pdf
    • https://cdn.shopify.com/s/files/1/0437/3777/6289/files/branches_of_science_worksheet_grade_3.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_off0000630d.bin
72e6af0e4569c01608aed2f8391961ccb9716edc290b96f9d16a8d509f7d9bd4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x630D 4964 bytes
font_01_sfnt_off000073cb.bin
67ed2fee5997900ec54ad02887fec432a268e64456de0ae4ae3b3b45cef716c2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73CB 10184 bytes
font_02_sfnt_off0000968b.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x968B 4324 bytes

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