Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a1389e32dc544c5…

MALICIOUS

PDF

34.5 KB Created: 2020-08-05 05:10:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9dc61bbbe5214680ba86948f818bc667 SHA-1: f817ff908013290b6c7f6d0be916c1d10df4d0c4 SHA-256: 0a1389e32dc544c57d268d76f747e9fdc38098d0ce3a4cfa758f55b27413126d
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which point to a link farm designed to manipulate search engine results. One prominent URL, https://ttraff.ru/pify?keyword=il+neoclassicismo+nell+arte+del+settecento+pinelli+pdf, is flagged as a malicious redirector. The ML classifier also strongly indicated maliciousness. This suggests the document is part of a campaign to drive traffic to malicious sites, likely for phishing or malware distribution.

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.ru/pify?keyword=il+neoclassicismo+nell+arte+del+settecento+pinelli+pdf
    • http://files.feemanagement.co.uk/uploads/1/3/0/7/130776648/c99508e80e.pdf
    • http://files.dubairhythmicgymnastics.com/uploads/1/3/0/7/130739864/5650780.pdf
    • http://files.glenvarbaptist.com/uploads/1/3/0/9/130969837/wafabeba.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/9536/7585/files/relunalisixiru.pdf
    • https://cdn.shopify.com/s/files/1/0434/5816/6941/files/the_100_dollar_startup.pdf
    • https://cdn.shopify.com/s/files/1/0432/5149/9170/files/american_pie_reunion_putlocker.pdf
    • https://cdn.shopify.com/s/files/1/0431/6397/5835/files/xupazimeko.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/93616534700.pdf
    • https://cdn.shopify.com/s/files/1/0433/2758/6472/files/zimirilukisokosum.pdf
    • https://cdn.shopify.com/s/files/1/0434/0652/4566/files/36487617673.pdf
    • https://cdn.shopify.com/s/files/1/0434/7225/7181/files/fizurexopopanebejutawinin.pdf
    • https://cdn.shopify.com/s/files/1/0431/3110/9540/files/gerogoriralatisa.pdf
    • https://cdn.shopify.com/s/files/1/0431/1020/3556/files/padisisirumobidizuwow.pdf
    • https://cdn.shopify.com/s/files/1/0435/5453/7624/files/seattle_public_library_overdrive.pdf
    • https://cdn.shopify.com/s/files/1/0428/2764/5084/files/56152034258.pdf
    • https://cdn.shopify.com/s/files/1/0435/2344/0799/files/pinobuwosuseju.pdf
    • https://cdn.shopify.com/s/files/1/0433/5511/1589/files/83323838977.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_off000048dd.bin
ea3ca833419548fbb877ecfe1b59ed7ac33b323545c1be56d7d2f90546255101		 pdf-font-stream PDF embedded font (sfnt) at offset 0x48DD 5236 bytes
font_01_sfnt_off00005a94.bin
76f2eb9b762fe3717a709cc6e1c134366cb1c81e758e246b52bee099d4a97bca		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A94 10304 bytes

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