Malicious PDF — malware analysis report

Static analysis result for SHA-256 5fc047a61fd24189…

MALICIOUS

PDF

36.1 KB Created: 2020-08-12 21:08:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fdb8d16b4c5fb857e31ef83847197f46 SHA-1: 43c2becb8829d8d94f52202cc955c51e409e461b SHA-256: 5fc047a61fd24189b61b0c0a884d23d68d9e242382d965517ee3df29e0feaafe
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, many of which point to a redirector service known for malicious activity. The document body itself contains obfuscated text and URLs, including a direct link to the ttraff.com redirector. This suggests the primary goal is to lure users to malicious sites, likely for further exploitation or phishing.

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.com/pify?keyword=revista+boticario+pdf+ciclo+7
    • http://files.thisisacard.shop/uploads/1/3/2/6/132682295/susivirenetix-xalasojo.pdf
    • http://lufunure.takyanyeung.com/uploads/1/3/1/6/131606349/wozapufi.pdf
    • http://files.africaep.org/uploads/1/3/1/3/131383657/tubuzuv-bomanutik-zeziroguxowo.pdf
    • http://files.carsontidwell.com/uploads/1/3/1/4/131438249/mumiv.pdf
    • http://files.johnsonvilleheritagefestival.com/uploads/1/3/1/6/131637606/f2d8b0.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0439/4047/9131/files/water_supply_and_sanitary_engineering_book_download.pdf
    • https://cdn.shopify.com/s/files/1/0429/8647/1587/files/24336587025.pdf
    • https://cdn.shopify.com/s/files/1/0431/4402/0125/files/john_deere_weed_eater.pdf
    • https://cdn.shopify.com/s/files/1/0434/7248/6564/files/ablutions_patrick_dewitt.pdf
    • https://cdn.shopify.com/s/files/1/0440/4045/4294/files/nanurametaselemegilex.pdf
    • https://cdn.shopify.com/s/files/1/0429/1634/8057/files/wugaravokunojugogipovanaj.pdf
    • https://cdn.shopify.com/s/files/1/0435/7590/2363/files/66390815963.pdf
    • https://cdn.shopify.com/s/files/1/0433/6015/7855/files/dokodavorazewef.pdf
    • https://cdn.shopify.com/s/files/1/0431/0273/2448/files/1879739137.pdf
    • https://cdn.shopify.com/s/files/1/0433/9276/2017/files/67687206325.pdf
    • https://cdn.shopify.com/s/files/1/0431/9058/3458/files/jewisogopexebatil.pdf
    • https://cdn.shopify.com/s/files/1/0433/8031/0174/files/mazefudemonobelaguxaxe.pdf
    • https://cdn.shopify.com/s/files/1/0437/6294/2106/files/89164516795.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/28391359898.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004ce2.bin
c1608abdeb59d2b43f466c9b96bc147c5b7522bc06173bc2b11cf25fa015d685		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4CE2 5436 bytes
font_01_sfnt_off00005f72.bin
fe04ed6f5bb27ad3ecb3a24a5ee1fe777d917ffcebf1798351896041cab13c8a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F72 10568 bytes

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