Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a68c216bf76e41a…

MALICIOUS

PDF

41.6 KB Created: 2020-08-18 18:02:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 81c4eccf54e8b0bf1abc6ca84253e262 SHA-1: 7be725663f6b4c7e5a4ddfe8c0948db67235ea79 SHA-256: 9a68c216bf76e41a2da3c0609e55347c751534543f6007b9c0f1bd020ca26104
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector service. The primary redirector URL is https://ttraff.cc/pify?keyword=air+cadets+uniform+2a, which is flagged as malicious. The document body, though heavily obfuscated, also contains this URL, suggesting the intent is to drive traffic to malicious infrastructure. The presence of numerous shopify.com links suggests an attempt to blend in with legitimate content while masking the malicious intent.

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=air+cadets+uniform+2a
    • http://pusosolo.whsengineeringdesign.com/uploads/1/3/2/6/132695742/panovimot.pdf
    • http://files.unekmission.com/uploads/1/3/0/9/130969939/1aad1f3.pdf
    • http://files.longocreative.com/uploads/1/3/1/3/131384643/e270bff73d2d765.pdf
    • http://xakerilad.biesyiczadyfci.com/uploads/1/3/1/4/131438800/ae80d265.pdf
    • http://dawidu.brokenspanishmarket.com/uploads/1/3/1/6/131637814/6614363.pdf
    • https://cdn.shopify.com/s/files/1/0437/6556/3549/files/96950923667.pdf
    • https://cdn.shopify.com/s/files/1/0440/5103/8358/files/92513353139.pdf
    • https://cdn.shopify.com/s/files/1/0431/4192/2982/files/7983557994.pdf
    • https://cdn.shopify.com/s/files/1/0432/4337/2699/files/dvdfab_free_download_full_version_crack.pdf
    • https://cdn.shopify.com/s/files/1/0432/1850/1799/files/augustine_confessions_book_4.pdf
    • https://cdn.shopify.com/s/files/1/0433/2794/6904/files/80793552552.pdf
    • https://cdn.shopify.com/s/files/1/0436/9963/4326/files/sap_accounting_course.pdf
    • https://cdn.shopify.com/s/files/1/0430/0655/8359/files/kawasaxopadoxawipewarafap.pdf
    • https://cdn.shopify.com/s/files/1/0431/0528/8352/files/xepilifitil.pdf
    • https://cdn.shopify.com/s/files/1/0431/3936/7061/files/aadhar_card_file.pdf
    • https://cdn.shopify.com/s/files/1/0431/7482/2044/files/lowes_easley_sc.pdf
    • https://cdn.shopify.com/s/files/1/0434/1301/2637/files/apio_propiedades_nutricionales.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_off0000653a.bin
0e7b39d4b54d32eea7ebed421cfc43ee0c86badd6029ecf70b94ac8f353ed538
pdf-font-stream PDF embedded font (sfnt) at offset 0x653A 5256 bytes
font_01_sfnt_off000076fc.bin
bc5d87073533a331cea6e1002206b98c0a9653d4349e58a8d6830f58b7886785
pdf-font-stream PDF embedded font (sfnt) at offset 0x76FC 10104 bytes