Malicious PDF — malware analysis report

Static analysis result for SHA-256 082cee03ba7a2108…

MALICIOUS

PDF

39.6 KB Created: 2020-08-23 22:10:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f447e2605e8bd0dcec38799bfdb5b168 SHA-1: 8e0c13225c550ca008c8316a99559d068ee82b6f SHA-256: 082cee03ba7a2108809e4f5945f2d559c5bc33e26733a05a03175e6107928cfc
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 pointing to Shopify domains, but one critical link directs to a known malicious redirector. This suggests a link farm or SEO poisoning tactic to disguise malicious activity. The ML classifier also strongly flagged this PDF as malicious. While no scripts were extracted, the presence of embedded URLs and the heuristic firings indicate a malicious intent to redirect users to harmful content.

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.com/pify?keyword=marching+band+uniforms+uk
    • http://sanij.learningaboutlife.net/uploads/1/3/1/3/131379211/miwomoverekepef_nogepubuferaxir_lebuja.pdf
    • http://files.faithfitnesskzoo.com/uploads/1/3/0/8/130814172/zizejum.pdf
    • http://files.gilheanyresearchgroup.com/uploads/1/3/0/7/130738764/vafof-nolekepak-loputojef.pdf
    • http://files.charlottecrone.com/uploads/1/3/1/8/131871621/8099088.pdf
    • http://files.kresadmissions.com/uploads/1/3/2/6/132683087/lebovojeketawa_gatob_devazesules.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/8117/9048/files/dugexugibegenube.pdf
    • https://cdn.shopify.com/s/files/1/0432/7941/7504/files/84375482424.pdf
    • https://cdn.shopify.com/s/files/1/0437/2883/0625/files/33295437367.pdf
    • https://cdn.shopify.com/s/files/1/0434/2985/5393/files/beginner_workout_routine_at_home.pdf
    • https://cdn.shopify.com/s/files/1/0453/6195/4971/files/75110641987.pdf
    • https://cdn.shopify.com/s/files/1/0431/1724/8672/files/34786931070.pdf
    • https://cdn.shopify.com/s/files/1/0433/7877/0076/files/20017594339.pdf
    • https://cdn.shopify.com/s/files/1/0429/0733/6863/files/luraxugiforivurivafetogu.pdf
    • https://cdn.shopify.com/s/files/1/0429/6422/2101/files/escala_de_braden.pdf
    • https://cdn.shopify.com/s/files/1/0430/5901/9933/files/hernias_da_parede_abdominal.pdf
    • https://cdn.shopify.com/s/files/1/0431/1603/6262/files/72013748554.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005c75.bin
19c88101b6d283c348431d3d9fbbd14db59a27830ea7833500255cb2da71fa36		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C75 5612 bytes
font_01_sfnt_off00006f69.bin
2d7a88e44e2c7cc0444cea043552b461b472ba7fbf8ae0897e559984053e98d4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F69 9968 bytes

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