Malicious PDF — malware analysis report

Static analysis result for SHA-256 be780c4097b8749c…

MALICIOUS

PDF

52.4 KB Created: 2020-08-09 17:29:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a00a40d47de5f7ca038865dd1013978a SHA-1: 739d2b40d5848f7dfd53c1927a6ef1fec1bcc89b SHA-256: be780c4097b8749ce261ccbdefb6bda03e4aa2679b2d5578f744f810d13c4128
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com, and one critical link redirects to a known malicious domain (ttraff.com). This suggests a phishing or SEO poisoning attack designed to drive traffic to malicious infrastructure. No scripts were extracted, and the document body was heavily obfuscated, limiting further analysis of the specific lure.

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=javascript+convert+byte+array+to+pdf
    • http://files.tropicalcuracao.com/uploads/1/3/2/8/132814097/e2d70f35962e09b.pdf
    • http://files.balance-bicycle.com/uploads/1/3/2/8/132814071/3ce4fab01277847.pdf
    • http://files.indypolevaultjumpscamps.com/uploads/1/3/2/6/132682142/vefadizumob.pdf
    • https://cdn.shopify.com/s/files/1/0428/2236/9446/files/how_to_merge_videos_in_vlc.pdf
    • https://cdn.shopify.com/s/files/1/0431/0935/1578/files/eat_right_for_your_blood_type_b_negative.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/test_1879eb6a-339e-4d45-a409-571cd94a4742.pdf?v=1594212285
    • https://cdn.shopify.com/s/files/1/0432/6778/4864/files/best_pantheon_cookie_clicker.pdf
    • https://cdn.shopify.com/s/files/1/0433/5340/7646/files/voperug.pdf
    • https://cdn.shopify.com/s/files/1/0432/7302/7749/files/ecologia_factores_bioticos_y_abioticos.pdf
    • https://cdn.shopify.com/s/files/1/0428/9013/3663/files/38305738793.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/65431134640.pdf
    • https://cdn.shopify.com/s/files/1/0430/5597/2505/files/18375800745.pdf
    • https://cdn.shopify.com/s/files/1/0431/6699/0498/files/53710741517.pdf
    • https://cdn.shopify.com/s/files/1/0427/8134/3900/files/2426484193.pdf
    • https://cdn.shopify.com/s/files/1/0440/3019/7925/files/sojourner_truth_ain_t_i_a_woman_speech.pdf
    • https://cdn.shopify.com/s/files/1/0428/6165/8279/files/xamanalizogakubigi.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000076d4.bin
4e36267124033d5e67e763d22a709bd398dba24924fd962468babed18253232e
pdf-font-stream PDF embedded font (sfnt) at offset 0x76D4 4268 bytes
font_01_sfnt_off000085eb.bin
8896f00777cdfdb0840cbc6fc76ee20f5995910fadedbe523945985ce7f09c57
pdf-font-stream PDF embedded font (sfnt) at offset 0x85EB 5408 bytes
font_02_sfnt_off0000986c.bin
d1288d771aa9e8ebf307602238eff902b98ff9a03e3f787e75f5d7eac1b2b376
pdf-font-stream PDF embedded font (sfnt) at offset 0x986C 1624 bytes
font_03_sfnt_off0000a10e.bin
44e4ecf5c7efee51efbece82956231d8644d9aa42aac546f807058208cc65020
pdf-font-stream PDF embedded font (sfnt) at offset 0xA10E 10176 bytes