Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e4304c1cf4c380c…

MALICIOUS

PDF

69.7 KB Created: 2020-08-02 15:12:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1586001f3cb8a362f28c7851a77a03f1 SHA-1: 0c2e79fcef3b66f5acd046bcc84446a4df62fb14 SHA-256: 1e4304c1cf4c380c5916f47ad58dcab29da5322286f5f1e4fa4722cb82bbe20d
152 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though partially corrupted, contains the text 'How to change deoxys form' and the malicious URL, suggesting a lure to a potentially harmful site. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it's designed to redirect users to malicious infrastructure.

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=how+to+change+deoxys+form
    • http://files.lakelandchoralsociety.org/uploads/1/3/0/7/130776891/mudexajijoxaja.pdf
    • http://files.jolenerogers.com/uploads/1/3/0/9/130969334/wupuma.pdf
    • http://files.orangevalleycreations.com/uploads/1/3/1/3/131383510/bujofaketuwomidabej.pdf
    • http://files.sylvieshires.com/uploads/1/3/1/4/131437919/ranobulexasef.pdf
    • https://cdn.shopify.com/s/files/1/0435/2416/1695/files/wadizuxolivusodasenu.pdf
    • https://cdn.shopify.com/s/files/1/0433/9885/6867/files/chilton_auto_repair_manual.pdf
    • https://cdn.shopify.com/s/files/1/0438/8651/0232/files/5988833981.pdf
    • https://cdn.shopify.com/s/files/1/0432/3193/6674/files/98065447405.pdf
    • https://cdn.shopify.com/s/files/1/0431/3900/6632/files/xavapidilup.pdf
    • https://cdn.shopify.com/s/files/1/0432/5759/4011/files/p90x_vs_insanity.pdf
    • https://cdn.shopify.com/s/files/1/0437/4413/3281/files/75223890476.pdf
    • https://cdn.shopify.com/s/files/1/0431/8894/5064/files/titomobedisiguke.pdf
    • https://cdn.shopify.com/s/files/1/0431/2177/0656/files/65406341519.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008a0d.bin
998fa96a1485dc6b62e19867006297b9abadae545587e79a6ad6067ecc6e1cf1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A0D 9340 bytes
font_01_sfnt_off0000a974.bin
7ae186703ef54c2b9147839f38988fd25a053b9996e7e60375a0cb44e9de8bca		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA974 5364 bytes
font_02_sfnt_off0000bb88.bin
a92909cacd2ccf4f5e13169f8f15e89f1d95d22885c04f9fa94a906df188d894		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBB88 8468 bytes
font_03_sfnt_off0000d33b.bin
b7d12eb4b32ea93f77b007bc065d59f134eaa704d9376169617453c186ef8178		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD33B 12148 bytes
font_04_sfnt_off0000fb43.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFB43 4324 bytes

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