Malicious PDF — malware analysis report

Static analysis result for SHA-256 464b7c702aac9b25…

MALICIOUS

PDF

40.9 KB Created: 2020-08-10 02:28:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8f5ca51d42dd73a910c4f15a9d605e52 SHA-1: 84441ee6eb84e8d23addcc57cf2c66e72898b39f SHA-256: 464b7c702aac9b2595150bc68cdbf7f5539d24f8e601849dd232aa10fb2b9f19
120 Risk Score

Malware Insights

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

The PDF contains a link farm and a primary malicious redirector URL, indicating a phishing or scam attempt. The document body, though heavily obfuscated, contains the text 'Centrifugal air blower pdf' and the malicious URL, suggesting a lure to entice users to click the link. The heuristic firings confirm the presence of a malicious redirector and a link farm, strongly suggesting a phishing attack.

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=centrifugal+air+blower+pdf
    • http://safesole.photosbysarahtucker.com/uploads/1/3/1/3/131379530/aa59611aef25e3.pdf
    • http://bajos.odapc.co.uk/uploads/1/3/0/9/130969465/9695658.pdf
    • http://files.lawofficesofmarkjcarrollpllc.com/uploads/1/3/2/6/132682048/5c87ebfd2d932.pdf
    • http://files.crescentmoondesignsjewelry.com/uploads/1/3/0/8/130873738/suwekitumipuwa_netowajilavo_vutok_givusa.pdf
    • http://files.shadeaustraliacommercial.com/uploads/1/3/2/8/132813998/4748252.pdf
    • https://cdn.shopify.com/s/files/1/0434/4116/0344/files/1337035876.pdf
    • https://cdn.shopify.com/s/files/1/0440/6594/7798/files/digimexivureva.pdf
    • https://cdn.shopify.com/s/files/1/0429/5085/2762/files/wosexuze.pdf
    • https://cdn.shopify.com/s/files/1/0428/9894/8255/files/72794364875.pdf
    • https://cdn.shopify.com/s/files/1/0435/5185/0647/files/a_fora_o_poder_dos_anjos_da_cabala_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/3015/1330/files/lamere.pdf
    • https://cdn.shopify.com/s/files/1/0430/7176/6690/files/fubunofudusanodubanima.pdf
    • https://cdn.shopify.com/s/files/1/0433/5131/0488/files/xokuzopizikukilox.pdf
    • https://cdn.shopify.com/s/files/1/0428/4193/1942/files/audiometria_clinica_portman.pdf
    • https://cdn.shopify.com/s/files/1/0443/6800/3228/files/changeling_the_lost_trove.pdf
    • https://cdn.shopify.com/s/files/1/0431/8072/0285/files/66033861933.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_off00006393.bin
8d2d57741d24f2846e7948cfbc4756f9f0b8a01512e351147828e6afb45cdeb0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6393 5168 bytes
font_01_sfnt_off00007540.bin
e370d6f6e9f2883313bcf6f75dd1f977e5070f0bd32a177f7e8d32b0e06d77f8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7540 9908 bytes

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