Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf4314b10a78fa6a…

MALICIOUS

PDF

43.5 KB Created: 2020-08-25 15:33:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9c8c18d30fd8e1a550623876b8762696 SHA-1: bdcaa04e41fe01f6ad9cd6717715ea775016cb80 SHA-256: bf4314b10a78fa6a66d0d9b83c3f2b8f10e842e31d6016b9f300dcbdef404a6a
150 Risk Score

Malware Insights

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

The PDF file was identified as malicious by a machine learning classifier and contains numerous external links. One of these links, pointing to 'ttraff.com', is flagged as a malicious redirector. This suggests the document is designed to lure users to malicious sites, likely for phishing or to download further malware. The presence of a large number of links, many hosted on 'cdn.shopify.com', indicates a potential link farm or SEO poisoning tactic to increase visibility.

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=%25D0%25B1%25D1%2580%25D0%25B0%25D1%2582%25D1%2581%25D1%2582%25D0%25B2%25D0%25BE%25D1%2582%25D0%25BE+%25D0%25BD%25D0%25B0+%25D1%2587%25D0%25B5%25D1%2580%25D0%25BD%25D0%25B8%25D1%258F+%25D0%25BA%25D0%25B8%25D0%25BD%25D0%25B6%25D0%25B0%25D0%25BB+%25D0%25BA%25D0%25BD%25D0%25B8%25D0%25B3%25D0%25B0+9
    • http://files.communityactionboonewinn.org/uploads/1/3/2/6/132681293/78b0fb1ed6.pdf
    • http://mapipelu.animalcarefoundation.org/uploads/1/3/2/7/132710621/bujuwexepifod_mafitofu_xezigoxafidu_rabej.pdf
    • http://files.rebeccasheraton.com/uploads/1/3/1/4/131405977/pezix-woxezapug-menedin.pdf
    • http://files.ourvillagefarmacy.com/uploads/1/3/0/7/130775892/fudivimoniden.pdf
    • http://zexowoza.putitbluntly.org/uploads/1/3/1/0/131071252/sibegoke-fugalat-nizufag.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/39646295774.pdf
    • https://cdn.shopify.com/s/files/1/0431/4074/3330/files/bartaman_patrika_today_all_pages_in_bengali.pdf
    • https://cdn.shopify.com/s/files/1/0428/9111/6700/files/bhakti_dj_song_new.pdf
    • https://cdn.shopify.com/s/files/1/0433/8984/5671/files/97124176332.pdf
    • https://cdn.shopify.com/s/files/1/0432/0775/3888/files/2013_acc_aha_cholesterol_guidelines.pdf
    • https://cdn.shopify.com/s/files/1/0432/0129/8589/files/angular_5_tutorial_free.pdf
    • https://cdn.shopify.com/s/files/1/0435/9749/6477/files/kered.pdf
    • https://cdn.shopify.com/s/files/1/0432/0555/8436/files/24967176756.pdf
    • https://cdn.shopify.com/s/files/1/0439/5266/8830/files/command_line_tools_mac_os.pdf
    • https://cdn.shopify.com/s/files/1/0429/5573/5199/files/61676599869.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_off00005dd8.bin
f7346bf244882871c84fd7e69b2797a2913740f04114f8af6df5786300a78906
pdf-font-stream PDF embedded font (sfnt) at offset 0x5DD8 5872 bytes
font_01_sfnt_off00007163.bin
c73126ef4ae1ac1839319f7d69fb4c470850d53e3dda9fc7ef1397d2d2e7ba10
pdf-font-stream PDF embedded font (sfnt) at offset 0x7163 14292 bytes