Malicious PDF — malware analysis report

Static analysis result for SHA-256 37f3f1d8a7b2b0ed…

MALICIOUS

PDF

48.8 KB Created: 2020-08-23 05:06:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5b2994cec7b72b6c449ee2efe41b1c11 SHA-1: e3957c15fcc78e9e121a3b89a945f0b116d5105e SHA-256: 37f3f1d8a7b2b0ed646fd8cc171b0f1553226d17d01952f9e28f9acb5293561a
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many pointing to Shopify domains, but one critical link redirects to a known malicious infrastructure. The document body, though heavily obfuscated, contains the text 'Cara akreditasi ban pt uns' and the malicious URL 'https://ttraff.cc/pify?keyword=cara++akreditasi+ban+pt+uns'. This suggests a lure to trick users into clicking the link, likely leading to a phishing or malware download site.

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/pify?keyword=cara++akreditasi+ban+pt+uns
    • http://savawivu.johnlockheating.com/uploads/1/3/1/4/131408027/9918287.pdf
    • http://files.jonmose.com/uploads/1/3/2/3/132302876/8315204.pdf
    • http://files.ipacanadaregion3.com/uploads/1/3/1/1/131164479/biviluvegixebe.pdf
    • https://cdn.shopify.com/s/files/1/0431/8127/7342/files/positional_vertigo_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0431/6856/3355/files/60904939388.pdf
    • https://cdn.shopify.com/s/files/1/0433/9616/9886/files/cahills_vs_vespers_book_5.pdf
    • https://cdn.shopify.com/s/files/1/0433/4492/0734/files/mapenudamesatuxed.pdf
    • https://cdn.shopify.com/s/files/1/0431/1587/2423/files/veporowuritejefin.pdf
    • https://cdn.shopify.com/s/files/1/0430/3853/9927/files/ziritulemisadiw.pdf
    • https://cdn.shopify.com/s/files/1/0429/0235/6124/files/18629562923.pdf
    • https://cdn.shopify.com/s/files/1/0428/0470/7491/files/61510942353.pdf
    • https://cdn.shopify.com/s/files/1/0436/5287/4390/files/dagasik.pdf
    • https://cdn.shopify.com/s/files/1/0441/1323/2024/files/bruno_mars_when_i_was_your_man_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0433/4528/1183/files/dapames.pdf
    • https://cdn.shopify.com/s/files/1/0432/6077/2510/files/juvuvususipeto.pdf
    • https://cdn.shopify.com/s/files/1/0430/8385/8080/files/jquery_download_file_from_url.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_off00006b49.bin
417a1c89726a9b921e808e34a47c988c2e5573f31f735c869714c5dcc6835495
pdf-font-stream PDF embedded font (sfnt) at offset 0x6B49 5032 bytes
font_01_sfnt_off00007c5f.bin
e4e91f00a26de9930a78bd568410322d643c67f7cf41ca65830aee0e85707baf
pdf-font-stream PDF embedded font (sfnt) at offset 0x7C5F 2016 bytes
font_02_sfnt_off000085c1.bin
72782cc69f51e227a905bf82a99303221f6881bdebfe24230f46b6348c89aa2a
pdf-font-stream PDF embedded font (sfnt) at offset 0x85C1 14828 bytes