Malicious PDF — malware analysis report

Static analysis result for SHA-256 68118f3b0a0e22df…

MALICIOUS

PDF

56.3 KB Created: 2020-08-03 04:15:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7f54cbc951edbdb23d997ed1aace50fd SHA-1: f5d87b64c9d9e5d9c873654dea84d27358cacc59 SHA-256: 68118f3b0a0e22dfb268003ae42a5a1f546fbfd5179374136e0d564b322742f5
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded links, many of which point to external PDF files hosted on Shopify. One critical heuristic indicates that a link within the document redirects to known malicious infrastructure at 'ttraff.cc'. The document body, though heavily obfuscated, contains references to the search query and the malicious URL, suggesting a phishing or redirection attempt. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=schroeder+thermal+physics+solutions+manual+pdf
    • http://files.wakingupwilder.com/uploads/1/3/1/4/131453998/suzesu.pdf
    • http://files.jona-music.com/uploads/1/3/1/4/131452858/3533253.pdf
    • http://wusoxowo.highergroundrooftopfarm.com/uploads/1/3/1/6/131607712/89ff10c127ad86.pdf
    • http://files.socalpengathering.com/uploads/1/3/1/4/131453018/9479338.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/9707/9460/files/roriwataf.pdf
    • https://cdn.shopify.com/s/files/1/0431/8471/7979/files/44970544970.pdf
    • https://cdn.shopify.com/s/files/1/0434/1828/8284/files/husqvarna_yta22v46_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/6577/8076/files/fibonacci_series_in_java.pdf
    • https://cdn.shopify.com/s/files/1/0434/4843/4840/files/w3_schools_jquery.pdf
    • https://cdn.shopify.com/s/files/1/0433/7516/5594/files/67386720602.pdf
    • https://cdn.shopify.com/s/files/1/0441/1644/3288/files/cardcaptor_sakura_wallpaper.pdf
    • https://cdn.shopify.com/s/files/1/0428/5012/3943/files/vamixijiw.pdf
    • https://cdn.shopify.com/s/files/1/0437/7437/8142/files/91788354121.pdf
    • https://cdn.shopify.com/s/files/1/0432/3796/5986/files/newujotologuvize.pdf
    • https://cdn.shopify.com/s/files/1/0433/5042/5750/files/winog.pdf
    • https://cdn.shopify.com/s/files/1/0431/2412/9952/files/bironokakefugofonap.pdf
    • https://cdn.shopify.com/s/files/1/0435/5283/3687/files/kofen.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007a1a.bin
3955d689fad21e3db95f46c20834264ce741605b4e6ea050960c6a3e0ffd9a50		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A1A 10836 bytes
font_01_sfnt_off00009ae1.bin
fa2a892d761a79507eb3869bd4f449c55a176195a62bbbc4704de3296dca1e3b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9AE1 5600 bytes
font_02_sfnt_off0000adc7.bin
fa7c34d59509b150068062e299da0eaec48a4524be1f4ceb047e781aafded3e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xADC7 11136 bytes

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