Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1265ab865acc3f1…

MALICIOUS

PDF

37.9 KB Created: 2020-08-15 08:43:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 00b37e47e950e7f03ada9900e2e3eb20 SHA-1: 7c031e5ee9ec6fd6b6a9447eb6e94466ab42ce20 SHA-256: e1265ab865acc3f19026b27df186d9b3a7139016c85d9819bf285eaf21dd5987
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily obfuscated, also contains this URL and references a 'java game free' lure. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on Shopify. The primary malicious URL is likely used to redirect the user to a further stage of the attack.

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.com/pify?keyword=bounce+tales+2+java+game+free
    • http://files.holytrinityorange.com.au/uploads/1/3/1/0/131070737/6974307.pdf
    • http://files.alekseihorn.com/uploads/1/3/1/3/131383754/butefor.pdf
    • http://files.tpsmediastudies.com/uploads/1/3/2/8/132814958/8449346.pdf
    • http://varugis.federalwayseniorcenter.org/uploads/1/3/1/6/131606174/rikugibosogawabas.pdf
    • https://cdn.shopify.com/s/files/1/0430/8090/8949/files/gexibodivonivokumimu.pdf
    • https://cdn.shopify.com/s/files/1/0434/1222/6200/files/31727786617.pdf
    • https://cdn.shopify.com/s/files/1/0433/5999/4014/files/muziporewovozeruzugase.pdf
    • https://cdn.shopify.com/s/files/1/0427/6341/9815/files/46886156052.pdf
    • https://cdn.shopify.com/s/files/1/0429/4203/8182/files/7201860649.pdf
    • https://cdn.shopify.com/s/files/1/0433/4495/3509/files/dr_br_ambedkar_books_in_marathi.pdf
    • https://cdn.shopify.com/s/files/1/0431/0473/1300/files/imperative_sentences.pdf
    • https://cdn.shopify.com/s/files/1/0428/7853/3799/files/tofelonazizolipowudimoduf.pdf
    • https://cdn.shopify.com/s/files/1/0431/2216/3866/files/git_clean_untracked.pdf
    • https://cdn.shopify.com/s/files/1/0432/1869/8400/files/broiler_farming_in_nigeria.pdf
    • https://cdn.shopify.com/s/files/1/0432/8436/5476/files/wondershare_editor_free_download_filehippo.pdf
    • https://cdn.shopify.com/s/files/1/0431/7220/0608/files/86595943890.pdf
    • https://cdn.shopify.com/s/files/1/0434/1088/2727/files/bbc_iplayer_free_for_android.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_off000052aa.bin
6812a6e37d0bc3f4225a32cfd6d08a1855300f110a12c858a67342be68f1d90d
pdf-font-stream PDF embedded font (sfnt) at offset 0x52AA 5516 bytes
font_01_sfnt_off00006567.bin
205b49d94930db99b37576b355f3c80603ff25b1de97705033db21b826ef9de9
pdf-font-stream PDF embedded font (sfnt) at offset 0x6567 11656 bytes