Malicious PDF — malware analysis report

Static analysis result for SHA-256 f4c7904e53fcb2de…

MALICIOUS

PDF

54.8 KB Created: 2020-08-20 15:14:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9d7c7eb9e63cd0574d833e5dc58c5173 SHA-1: 85ce769b1a927603c47488fc7f99644b1dd376a2 SHA-256: f4c7904e53fcb2de556cf83a3d6d4b3ed806b6e7a846f4c3350bb68e474ce8da
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=amedspor+direni%25C5%259F+formas%25C4%25B1'. This indicates the document's primary purpose is to redirect users to malicious infrastructure. The presence of a large number of external PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to obscure the malicious redirector. No scripts were extracted, but the PDF structure and embedded links strongly suggest a social engineering lure.

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=amedspor+direni%25C5%259F+formas%25C4%25B1
    • http://xuzor.rkuclip.com/uploads/1/3/1/4/131453133/danatutuseta_vuwokafalu.pdf
    • http://fokovi.amandasmusiclessons.com/uploads/1/3/2/6/132681218/90b2a.pdf
    • http://files.artwaddleboerne.org/uploads/1/3/1/8/131856005/vinasamajotodug_lagifix_kuveloxenite_zanubarori.pdf
    • https://cdn.shopify.com/s/files/1/0437/8991/0167/files/glass_mask_manga.pdf
    • https://cdn.shopify.com/s/files/1/0435/2134/3647/files/4552557057.pdf
    • https://cdn.shopify.com/s/files/1/0430/2117/2897/files/jaxokadelogigovubized.pdf
    • https://cdn.shopify.com/s/files/1/0430/5354/7677/files/sociologija_smiljka_tomanovic_knjiga.pdf
    • https://cdn.shopify.com/s/files/1/0432/9861/9557/files/58584760178.pdf
    • https://cdn.shopify.com/s/files/1/0428/1332/5471/files/26803880557.pdf
    • https://cdn.shopify.com/s/files/1/0446/9764/9306/files/gone_in_60_seconds_soundtrack.pdf
    • https://cdn.shopify.com/s/files/1/0435/8314/4093/files/tb_sheets_lyrics_meaning.pdf
    • https://cdn.shopify.com/s/files/1/0435/3549/9418/files/xisovop.pdf
    • https://cdn.shopify.com/s/files/1/0432/3583/6072/files/javom.pdf
    • https://cdn.shopify.com/s/files/1/0431/0476/4068/files/wesuterilo.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_off00008802.bin
9d8f129d591497f1fc938098cd3af6787b8b4adb03d50aff1f96fe406eb5d4e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8802 5424 bytes
font_01_sfnt_off000099e1.bin
7d779be9ef12a59b7335e8580184286ab882c8ce952cca5a9d48de973fbb6209		 pdf-font-stream PDF embedded font (sfnt) at offset 0x99E1 17620 bytes

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