Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d306ef31faa03ec…

MALICIOUS

PDF

47.2 KB Created: 2020-08-01 23:43:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f37e09343c580dc494239a7635ecd076 SHA-1: 7cce8db8ff7b60f48ff8de27fa80b2c453380777 SHA-256: 3d306ef31faa03ec64bb24bf78059cc44bee7be5fc9bc39e00b525bc7ac80473
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

This PDF file contains numerous embedded links, a significant portion of which point to a link farm hosted on cdn.shopify.com. One of the primary links, however, directs to a known malicious redirector at 'ttraff.ru'. The document body, though heavily obfuscated, contains text related to 'force and destiny character generator' and the malicious URL, suggesting a lure to a potentially harmful site. The ML classifier strongly flagged this PDF as malicious.

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=force+and+destiny+character+generator
    • http://files.platinumsimulators.com/uploads/1/3/1/4/131453847/koxevo_povasisegidufuv_rukaj_vawig.pdf
    • http://files.mvialions.org/uploads/1/3/1/4/131407849/7451554.pdf
    • http://files.stjohnsallegany.org/uploads/1/3/1/6/131637056/e65e4.pdf
    • http://files.castlewoodclays.com/uploads/1/3/0/8/130873907/b18a71fa7bc6.pdf
    • http://files.travelercountry.com/uploads/1/3/2/6/132682030/508a3.pdf
    • https://cdn.shopify.com/s/files/1/0428/1961/6935/files/98703947721.pdf
    • https://cdn.shopify.com/s/files/1/0430/3116/7137/files/guziburuvepog.pdf
    • https://cdn.shopify.com/s/files/1/0427/5752/1574/files/vunobogovegatewifanob.pdf
    • https://cdn.shopify.com/s/files/1/0430/7881/1810/files/zitosezerikono.pdf
    • https://cdn.shopify.com/s/files/1/0431/9870/9918/files/osrs_heros_quest.pdf
    • https://cdn.shopify.com/s/files/1/0428/6647/5174/files/23364486442.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/23535065851.pdf
    • https://cdn.shopify.com/s/files/1/0428/2020/6758/files/moruzemobu.pdf
    • https://cdn.shopify.com/s/files/1/0430/8267/8433/files/submit_form.pdf
    • https://cdn.shopify.com/s/files/1/0433/5150/7094/files/1978778491.pdf
    • https://cdn.shopify.com/s/files/1/0439/2956/7387/files/94361537286.pdf
    • https://cdn.shopify.com/s/files/1/0430/0872/1045/files/73912496761.pdf
    • https://cdn.shopify.com/s/files/1/0432/6329/5654/files/fikokovesepemagux.pdf
    • https://cdn.shopify.com/s/files/1/0433/1808/3742/files/66070951792.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000078d3.bin
42c0965aa13a7c2b8b3eba3c778bbadbedbd1936807e19f6de2c8b66ac24497b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78D3 5228 bytes
font_01_sfnt_off00008aa2.bin
a98e85b4d15e01b1d50a303cecf97c6962ae122b188df0ef16fa5f15645088d7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8AA2 10988 bytes

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