Malicious PDF — malware analysis report

Static analysis result for SHA-256 f4ed06c9d5536081…

MALICIOUS

PDF

46.3 KB Created: 2020-08-10 08:24:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bac8a2f401b2fed678f31dff4682242e SHA-1: 18c3615b97f439048f4860c329f69e7a59b6af2b SHA-256: f4ed06c9d5536081f7246ffe9676d7f8685c0fae205f7bb138dfc0cc51e4d23f
140 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with one critical link pointing to a known malicious redirector. The document body, though heavily obfuscated, contains a URL that is also present in the heuristics. This suggests the primary goal is to redirect the user to malicious infrastructure, likely for phishing or further malware delivery. The presence of multiple Shopify links, some confirmed benign, indicates an attempt to blend in with legitimate content.

Heuristics 4

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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=14+punctuation+marks+with+examples+pdf
    • http://files.k12onlinecurriculum.com/uploads/1/3/1/4/131436991/jafale_kelofufimumowe.pdf
    • http://files.makooutfitters.com/uploads/1/3/1/3/131397973/temejiresurigesek.pdf
    • http://files.yukonshinevalley.com/uploads/1/3/0/7/130739871/bivenoz-tesatanir.pdf
    • https://cdn.shopify.com/s/files/1/0427/5997/9174/files/xoxujumezujizete.pdf
    • https://cdn.shopify.com/s/files/1/0428/3308/4575/files/personal_development_module.pdf
    • https://cdn.shopify.com/s/files/1/0435/1167/7083/files/67304785638.pdf
    • https://cdn.shopify.com/s/files/1/0430/4653/5322/files/25818718403.pdf
    • https://cdn.shopify.com/s/files/1/0437/1261/0472/files/kopaseked.pdf
    • https://cdn.shopify.com/s/files/1/0432/8954/2809/files/13593839442.pdf
    • https://cdn.shopify.com/s/files/1/0436/2246/5699/files/43780537131.pdf
    • https://cdn.shopify.com/s/files/1/0428/1437/4047/files/20541326572.pdf
    • https://cdn.shopify.com/s/files/1/0432/8158/0188/files/ludomowidekufisemagi.pdf
    • https://cdn.shopify.com/s/files/1/0427/7148/0742/files/nikasusitofogujujeganuk.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_off000074e7.bin
d8cacf809e6218ec88f75e9ede2e15714886198c94afa2197fbc6fb50ddb4ff4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74E7 5664 bytes
font_01_sfnt_off0000881a.bin
0698f127bfc3566d5dc7c3de4c776e3a96ff6b80ef77a37f4e5eda8e13aa6c73		 pdf-font-stream PDF embedded font (sfnt) at offset 0x881A 10732 bytes

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