Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e08bd235e806dc2…

MALICIOUS

PDF

34.7 KB Created: 2020-08-21 22:06:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: eceacb87bbf60e9b28c8e8f446186586 SHA-1: cbbcc9e10ae2bfec5f2c212c326f095f2410ec53 SHA-256: 3e08bd235e806dc268c5827f07709fdc753bde67e967ca1839a4117507614793
154 Risk Score

Malware Insights

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

This PDF document contains a link farm and a malicious redirector URL, indicating a phishing or scam attempt. The document body, though partially corrupted, contains text related to a portable air conditioner manual, likely used as a lure. The primary malicious IOC is the redirector URL, which is designed to lead users to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=ar-+condicionado+port%25C3%25A1til+springer+midea+manual
    • http://files.photosbacktolife.com/uploads/1/3/0/7/130739490/4006737.pdf
    • http://files.yisonline.com/uploads/1/3/1/6/131607029/8294014.pdf
    • http://ziweda.creativeawarenesscounseling.com/uploads/1/3/1/4/131407068/2841d550addffe.pdf
    • http://files.porthackinglac.com/uploads/1/3/1/4/131438439/zujizefepapawej-faxig-magapul-raguzebimatosok.pdf
    • http://files.bluemantaswimming.com/uploads/1/3/1/4/131454549/094a5b265.pdf
    • https://cdn.shopify.com/s/files/1/0431/2216/3876/files/6191166527.pdf
    • https://cdn.shopify.com/s/files/1/0437/0753/1432/files/pemisa.pdf
    • https://cdn.shopify.com/s/files/1/0438/1884/4322/files/add_blank_page_to_java.pdf
    • https://cdn.shopify.com/s/files/1/0433/0009/4112/files/mouse_party_neural_data_matrix_answers.pdf
    • https://cdn.shopify.com/s/files/1/0431/3769/5906/files/dakanazo.pdf
    • https://cdn.shopify.com/s/files/1/0431/8996/0865/files/56050065951.pdf
    • https://cdn.shopify.com/s/files/1/0428/3593/5388/files/28349188859.pdf
    • https://cdn.shopify.com/s/files/1/0433/5363/7018/files/22516961712.pdf
    • https://cdn.shopify.com/s/files/1/0433/4193/8856/files/why_google_play_store_showing_pending.pdf
    • https://cdn.shopify.com/s/files/1/0435/9972/4702/files/xafifuleligolekunevof.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_off000046c3.bin
9585b6a83edc91a4ae57389a85867cee7fe5fe67762c4525143c075c075d23fc
pdf-font-stream PDF embedded font (sfnt) at offset 0x46C3 5648 bytes
font_01_sfnt_off00005948.bin
8d51aa619c3d35cedce52fe9560d04c379bc1c42d3c10147a2c4524cff2aff42
pdf-font-stream PDF embedded font (sfnt) at offset 0x5948 10060 bytes