Malicious PDF — malware analysis report

Static analysis result for SHA-256 a45254f2395ebf95…

MALICIOUS

PDF

44.9 KB Created: 2020-08-31 01:54:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b007418fd521466a251cc7550ba95ba3 SHA-1: ba11fb7101ba4b25e823addb2a2fc880fe5fcaf2 SHA-256: a45254f2395ebf955f3240a25c006f10f929ff8b94d3c4f4ad8c5108ad41a00c
150 Risk Score

Malware Insights

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

The PDF contains a mass of external links, with one specifically pointing to a known malicious redirector. The document body contains a URL that is also present in the heuristics, indicating a likely lure to a malicious site. The presence of numerous Shopify-hosted PDF links suggests an attempt at SEO poisoning to drive traffic to the malicious redirector.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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/wix?keyword=la+malquerida+telenovela+capitulo+fi
    • https://cdn.shopify.com/s/files/1/0427/5293/4044/files/grammatical_categories_and_word_classes.pdf
    • https://cdn.shopify.com/s/files/1/0434/4286/4289/files/29673484423.pdf
    • https://cdn.shopify.com/s/files/1/0462/2211/4970/files/fubovizufak.pdf
    • https://cdn.shopify.com/s/files/1/0437/7929/3338/files/hey_google_play_store.pdf
    • https://cdn.shopify.com/s/files/1/0432/0083/9842/files/zalemaperibaziwaguta.pdf
    • https://cdn.shopify.com/s/files/1/0432/3282/1412/files/annamayya_songs_free.pdf
    • https://cdn.shopify.com/s/files/1/0433/1218/5499/files/zijakogikezagoxexerow.pdf
    • https://cdn.shopify.com/s/files/1/0431/1053/1233/files/76485305097.pdf
    • https://cdn.shopify.com/s/files/1/0434/4987/6641/files/datacamp_pyspark_dataframe_cheat_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0435/5352/1823/files/21570947212.pdf
    • https://cdn.shopify.com/s/files/1/0440/9622/5432/files/75676581094.pdf
    • https://static.usrfiles.com/ugd/9757e7_ecc921a5e7584394afd97b663063108b.pdf
    • https://static.usrfiles.com/ugd/921909_843c99fcb21f4c48aba401d761e8e979.pdf
    • https://static.usrfiles.com/ugd/1fa6dd_bc63a4772a07496cbc2ca5dd9c10b4d9.pdf
    • https://static.usrfiles.com/ugd/b8c837_92e2515d6d304a108182371a471da986.pdf
    • https://static.usrfiles.com/ugd/856cea_c2ae823f6baf4ba5a49143e8709b0f71.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
font_00_sfnt_off0000677f.bin
ea2632c665145d3f457a0f63d4908708b37293fb306216ae03ee952faa149234
pdf-font-stream PDF embedded font (sfnt) at offset 0x677F 5252 bytes
font_01_sfnt_off00007942.bin
daad3f347a4f42f432ee9983e619a7c063e36761dba5934b469418034847e28e
pdf-font-stream PDF embedded font (sfnt) at offset 0x7942 1800 bytes
font_02_sfnt_off000081d0.bin
f59c2ea64ec2b42b52e06ff9c523ff5c85700a06e640dec0c1e6a0c76d46524b
pdf-font-stream PDF embedded font (sfnt) at offset 0x81D0 11136 bytes