Malicious PDF — malware analysis report

Static analysis result for SHA-256 aeeaaf2914b61e0d…

MALICIOUS

PDF

42.0 KB Created: 2020-08-11 06:19:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d74fac0c9c29aea721e3a31f3cf13b6f SHA-1: f17b4170a200d30f83857e61094a7580344be310 SHA-256: aeeaaf2914b61e0d189164740c292a9d7d3fdb076740e05f039db6a3ba6ae5dd
152 Risk Score

Malware Insights

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

This PDF document contains a mass of external links, many of which are disguised as book downloads. The primary link, 'https://ttraff.com/pify?keyword=transistor+amplifier+book+pdf', is identified as a malicious redirector. The document body, though heavily obfuscated, contains this same URL, indicating the intent is to lure the user to a malicious site through a deceptive link.

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=transistor+amplifier+book+pdf
    • http://files.bellacalore.com/uploads/1/3/0/8/130814279/mumubimogamu-fupedevumebat-ropetiwajo.pdf
    • http://files.hilkerstudio.com/uploads/1/3/1/4/131437402/d75dc3d14.pdf
    • http://files.merebrookllc.com/uploads/1/3/1/3/131379594/zajid_xepiru_firiwa.pdf
    • http://files.scubalifeofpy.com/uploads/1/3/1/3/131383318/7a16eb25204f292.pdf
    • http://repimime.shawndfilms.com/uploads/1/3/1/6/131606490/70fdfb66008.pdf
    • https://cdn.shopify.com/s/files/1/0434/5102/3526/files/wibezego.pdf
    • https://cdn.shopify.com/s/files/1/0448/8429/5847/files/campcraft_target_book.pdf
    • https://cdn.shopify.com/s/files/1/0430/0655/8359/files/degedawub.pdf
    • https://cdn.shopify.com/s/files/1/0439/3874/2430/files/24452514946.pdf
    • https://cdn.shopify.com/s/files/1/0429/8260/4963/files/5280334093.pdf
    • https://cdn.shopify.com/s/files/1/0433/2378/5370/files/aprender_russo_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zetuvoveluganimuwejipas.pdf
    • https://cdn.shopify.com/s/files/1/0431/2167/2356/files/gurerosaterel.pdf
    • https://cdn.shopify.com/s/files/1/0432/2826/6654/files/61085445748.pdf
    • https://cdn.shopify.com/s/files/1/0428/1873/2191/files/how_to_combine_jpg_files.pdf
    • https://cdn.shopify.com/s/files/1/0430/0118/4417/files/6290429240.pdf
    • https://cdn.shopify.com/s/files/1/0429/7919/7081/files/d3_node_js.pdf
    • https://cdn.shopify.com/s/files/1/0430/6698/2561/files/bescherelle_la_conjugaison.pdf
    • https://cdn.shopify.com/s/files/1/0439/0571/2296/files/mosaicos_6th_edition_free.pdf
    • https://cdn.shopify.com/s/files/1/0430/7045/5965/files/wifejasobivowuzajana.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://cdn.shopify.com/s/files/1/0439/0571/22

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005c39.bin
69cdde16a318dca6f1e5479f5ee8d706c86a10c3c67948fd45ce913ed0af7054		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C39 5340 bytes
font_01_sfnt_off00006e41.bin
7d492e32a206da18be116442c275ebcf8956e30aeb4038122ea636e4692451d6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E41 14428 bytes

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