Malicious PDF — malware analysis report

Static analysis result for SHA-256 00a8897d9bde2839…

MALICIOUS

PDF

69.6 KB Created: 2020-08-06 09:12:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f32013305e27529cd27547d1f0e83b3c SHA-1: f88ff682fe8ed3d55ef5c58fd60c3141e3affb3c SHA-256: 00a8897d9bde28398b881752a41ed0da79875ccf8e998bb6528d4315210297d6
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains the same URL as the redirector, suggesting an attempt to lure users to malicious content. The ML classifier also strongly indicated maliciousness.

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=techniques+d+am%25C3%25A9lioration+continue+en+production+pdf
    • http://jorijo.theburrs.org/uploads/1/3/0/8/130814921/0883c7c80.pdf
    • http://files.leahrempelphotography.com/uploads/1/3/0/9/130969053/zufenagam.pdf
    • http://files.totallynordic.co.uk/uploads/1/3/1/4/131408970/dizagugiripimuz.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/7741/0720/files/nudonidobaxutagatuw.pdf
    • https://cdn.shopify.com/s/files/1/0429/2925/8649/files/jomelumuveke.pdf
    • https://cdn.shopify.com/s/files/1/0431/1741/2501/files/toviximoguboxowide.pdf
    • https://cdn.shopify.com/s/files/1/0427/5663/6828/files/taxutef.pdf
    • https://cdn.shopify.com/s/files/1/0432/0886/8001/files/56020531685.pdf
    • https://cdn.shopify.com/s/files/1/0433/9197/5580/files/vavemobegekaxusalupobokos.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lipowu.pdf
    • https://cdn.shopify.com/s/files/1/0429/6287/8618/files/80797493918.pdf
    • https://cdn.shopify.com/s/files/1/0427/6636/8935/files/23280588696.pdf
    • https://cdn.shopify.com/s/files/1/0428/6601/6412/files/ratugotiguzasanobudato.pdf
    • https://cdn.shopify.com/s/files/1/0435/0027/3830/files/kibuwos.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/
    • https://savannah.gnu.org/projects/freefont/
    • http://www.gnu.org/licenses/
    • http://www.gnu.org/copyleft/gpl.html
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008b3e.bin
0eac1552a6a0cc8d6d43e14f5c157d052ff2bf21460314f67a2c213e0a454e63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B3E 6744 bytes
font_01_sfnt_off00009c25.bin
bcbefce5f39ec769aaa8614ab888ce43f48760e4dae8d67d27aee84a3e44ff1f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9C25 5612 bytes
font_02_sfnt_off0000ae85.bin
b5a16e0e27fd7ec1e5233468ec2116f1103745af8dbc026963c8a600946cd635		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAE85 6340 bytes
font_03_sfnt_off0000be17.bin
56c002e81943a49f074a4209f396d7bf39108f9c44bfb3b653201e7d17db2209		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBE17 16980 bytes
font_04_sfnt_off0000efa7.bin
b1f5ea7eb6df56fdc2a0c8d605c92c3a2ccbbe74327d2aac8c0510abb85ec908		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEFA7 16336 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.