Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb02bde29d76c367…

MALICIOUS

PDF

47.7 KB Created: 2020-08-09 03:48:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 42c38195563171aac14c771f8b7ee351 SHA-1: 909066dfe04a0a62fad61ecd6bd2e3362a526a2d SHA-256: fb02bde29d76c367e83ee01bedcf7b228f12dae55456477854722787100d4fcb
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a primary URL pointing to a known malicious redirector. The document body text, while appearing benign, is likely a lure to disguise the malicious intent of the embedded links. The primary malicious IOC is the redirector URL, which likely leads to further malicious content or phishing pages.

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=reaching+and+teaching+students+in+poverty+pdf
    • http://files.jeridoo.ch/uploads/1/3/0/8/130874691/7afca27e.pdf
    • http://files.christianmendozamusic.com/uploads/1/3/0/7/130776266/wonexovoxu_tevunoloxazuju_gimolizo.pdf
    • http://sariviro.reearthconsulting.com/uploads/1/3/1/6/131606875/xaxitibosi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/doworefobose.pdf
    • https://cdn.shopify.com/s/files/1/0431/0840/1316/files/67623421769.pdf
    • https://cdn.shopify.com/s/files/1/0441/2456/9752/files/6229405975.pdf
    • https://cdn.shopify.com/s/files/1/0438/2051/5488/files/82550086182.pdf
    • https://cdn.shopify.com/s/files/1/0429/7755/8681/files/girerusebepodeki.pdf
    • https://cdn.shopify.com/s/files/1/0429/1090/8572/files/figafomanefajur.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/45366335679.pdf
    • https://cdn.shopify.com/s/files/1/0437/7827/7525/files/elmo_s_world_fish.pdf
    • https://cdn.shopify.com/s/files/1/0438/0193/6033/files/makkar_ielts_speaking_2020_jan_to_april.pdf
    • https://cdn.shopify.com/s/files/1/0436/6788/2134/files/ggplot_bar_chart.pdf
    • https://cdn.shopify.com/s/files/1/0433/2378/5370/files/dark_souls_2_agape_ring.pdf
    • https://cdn.shopify.com/s/files/1/0430/6167/4133/files/50442958583.pdf
    • https://cdn.shopify.com/s/files/1/0434/8251/3574/files/alaba_adios_danny_berrios.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_off00007c55.bin
ad15719f54e14eb2a2642cd6a0db378329b710570823beb7e37486d389221b39		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C55 5552 bytes
font_01_sfnt_off00008f48.bin
e3d56fc60d49fa0e9c92d30279012da84194bb9c57897d67c2e8979a73319096		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F48 10088 bytes

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