Malicious PDF — malware analysis report

Static analysis result for SHA-256 484656f10d36077e…

MALICIOUS

PDF

34.9 KB Created: 2020-08-18 23:52:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c2c8b0d6361fe7dc012e3b418b061935 SHA-1: 34579e5fb8cac3a4d101c9040e786a919682736e SHA-256: 484656f10d36077e695c6fcb0293824ff1cd66858c0c5a5ff868bba84eb1fac1
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a mass of external links, with the primary link directing to a known malicious redirector. The document body, though partially corrupted, contains the URL 'https://ttraff.com/pify?keyword=christmas+labels+template+avery+5162', suggesting a lure to disguise malicious redirection. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the PDF structure and embedded links indicate a redirection-based 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=christmas+labels+template+avery+5162
    • http://files.teledrama.org/uploads/1/3/2/8/132814906/nuxevowozajop.pdf
    • http://files.nc-consulting-enterprises.com/uploads/1/3/0/7/130776164/9d6984b19aacbd4.pdf
    • http://files.customfitc.com/uploads/1/3/2/7/132740267/1182711.pdf
    • http://files.whirlwindweather.com/uploads/1/3/0/7/130776327/6930029.pdf
    • http://sugeg.flourish-homestead.com/uploads/1/3/0/7/130739346/9181a445d5.pdf
    • https://cdn.shopify.com/s/files/1/0438/3395/0358/files/causative_active_and_passive.pdf
    • https://cdn.shopify.com/s/files/1/0435/0597/5462/files/optimistic_nihilism_book.pdf
    • https://cdn.shopify.com/s/files/1/0436/0057/6669/files/mobazataj.pdf
    • https://cdn.shopify.com/s/files/1/0428/3963/8179/files/gopodukibulamunelek.pdf
    • https://cdn.shopify.com/s/files/1/0430/1009/7313/files/arcing_fault_in_transformer.pdf
    • https://cdn.shopify.com/s/files/1/0436/1030/8765/files/32927142316.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/16485275060.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tufajotojitumawudawemir.pdf
    • https://cdn.shopify.com/s/files/1/0436/4242/1398/files/19867015438.pdf
    • https://cdn.shopify.com/s/files/1/0430/7674/7413/files/coaching_ontologico_ejercicios.pdf
    • https://cdn.shopify.com/s/files/1/0430/4610/9341/files/kolenudawovekapugajowo.pdf
    • https://cdn.shopify.com/s/files/1/0433/3522/1403/files/achenbach_child_behavior_checklist.pdf
    • https://cdn.shopify.com/s/files/1/0433/3905/5253/files/zidedot.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_off00004a3c.bin
ff8640ef06afb43ba0d27852786e49826f40e591a02c6ae6f669a81e55e81af3
pdf-font-stream PDF embedded font (sfnt) at offset 0x4A3C 5728 bytes
font_01_sfnt_off00005dad.bin
93e1d5c2caa65a38d2e1d0097ddf308d61af4c1b7bf50a65fe507430e6ea2c5f
pdf-font-stream PDF embedded font (sfnt) at offset 0x5DAD 9608 bytes