Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6d24f40a6ed3080…

MALICIOUS

PDF

55.5 KB Created: 2020-08-31 12:58:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e7c804c018b3850637a0f38f495b820b SHA-1: 2da5baa9ba9cd113a6ad3411b00326b55d57843a SHA-256: f6d24f40a6ed3080dae03c760c218208412d442ed0a978dd0b484296716aea9e
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.ru'. This URL is presented within the document body, disguised as an 'iptv reseller guide'. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many of which point to Shopify. The primary malicious URL is 'https://ttraff.ru/wix?keyword=iptv+reseller+guide', which is likely intended to lead the user to a malicious site.

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/wix?keyword=iptv+reseller+guide
    • https://cdn.shopify.com/s/files/1/0440/7666/2949/files/75126424900.pdf
    • https://cdn.shopify.com/s/files/1/0431/4752/6293/files/zibudirilovirel.pdf
    • https://cdn.shopify.com/s/files/1/0437/8758/3650/files/80274912429.pdf
    • https://cdn.shopify.com/s/files/1/0437/8250/4600/files/tokekoluv.pdf
    • https://cdn.shopify.com/s/files/1/0436/8846/0441/files/genetics_from_genes_to_genomes_5th_edition_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/9811/2167/files/96283551598.pdf
    • https://cdn.shopify.com/s/files/1/0437/5265/2951/files/business_english_vocabulary_upper_intermediate.pdf
    • https://cdn.shopify.com/s/files/1/0438/6599/7472/files/preschool_alphabet_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0430/1121/1425/files/xofuxeju.pdf
    • https://cdn.shopify.com/s/files/1/0432/1335/7214/files/diniwuworisakumox.pdf
    • https://cdn.shopify.com/s/files/1/0437/2935/4917/files/gomunupusoxapapumujuliwu.pdf
    • https://cdn.shopify.com/s/files/1/0431/1928/0288/files/convert_to_editable_word_doc_free.pdf
    • https://cdn.shopify.com/s/files/1/0432/1722/3840/files/tagadutib.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/74195332560.pdf
    • https://static.usrfiles.com/ugd/c63dba_b20c280c0c7d44d8853114d4137e4804.pdf
    • https://static.usrfiles.com/ugd/724bd4_4e221ce6155c4ae8956f6abf16ca051e.pdf
    • https://static.usrfiles.com/ugd/b8c837_d070095069b0479f9e27e801630fc0bd.pdf
    • https://static.usrfiles.com/ugd/e4ff69_1d4fc3ddd58a43c8bf3fa03d4da13371.pdf
    • https://static.usrfiles.com/ugd/e8506d_96aea3938a7b486cbf5d1bfa6d1d7c7f.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off0000a2f8.bin
f0948ce707cb5427d2935b470209af19f015347ad14b2484873ad2dee86e63cc		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0xA2F8 26500 bytes
font_00_sfnt_off00006eb0.bin
bc53971645db9b020be17f07dbb33b833eaefc17f390afd1b3f7a136f5561fbc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EB0 4912 bytes
font_01_sfnt_off00007f7c.bin
c5b8444a31176f3b7fa775e7ce549494c087f3b3abccd09753b25353930694cf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F7C 10292 bytes

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